CVE-2023-52603

{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2023-52603", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-02T21:55:42.573Z", "datePublished": "2024-03-06T06:45:29.731Z", "dateUpdated": "2026-08-05T09:10:37.881Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:37.881Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type 'struct dtslot [128]'\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n </TASK>\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only after locally mounting a crafted JFS block/loop image and inserting a directory entry (mkdirat \u2192 jfs_mkdir \u2192 dtInsert \u2192 dtSplitUp \u2192 dtSplitRoot); fs/jfs has no network or adjacent-protocol entry path.\nAC:L - The attacker fully controls on-disk dtroot freelist/next values, so fsi becomes <-1 and the OOB indexing of rp->slot[fsi] is deterministic with an ordinary mkdir that splits the root; no race or uncontrolled state is required.\nPR:L - As with sibling JFS crafted-image CVEs, an unprivileged local session user can attach the malicious image via udisks2/polkit/automount on desktops, kiosks, and shared workstations, then trigger the bug with ordinary mkdir requiring only write access on that filesystem.\nUI:N - The attacker supplies the image, causes it to be mounted (including via automount/udisks on their own session), and drives mkdir themselves; no separate victim action is required at exploitation time.\nS:U - The out-of-bounds access corrupts host-kernel metapage/heap memory within the same OS security authority and does not cross a VM, IOMMU, or other boundary.\nC:H - Walking a corrupted freelist indexes rp->slot[] with attacker-influenced negative/out-of-range values (syzbot: index -2), producing an unbounded out-of-bounds read of adjacent kernel metapage/heap memory that can be leveraged for disclosure (KASAN also reported slab-out-of-bounds Read in dtSplitRoot).\nI:H - After the freelist walk, f->next = n performs an out-of-bounds write into the last visited slot when that slot lies outside the valid array, yielding a kernel heap/metapage corruption write primitive suitable for control-flow hijacking.\nA:H - Syzbot reproduced UBSAN array-index-out-of-bounds in dtSplitRoot that panics under panic_on_warn, and the same wild metapage access can oops/crash the kernel without UBSAN."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/jfs/jfs_dtree.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fd3486a893778770557649fe28afa5e463d4ed07", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7aa33854477d9c346f5560a1a1fcb3fe7783e2a8", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e4ce01c25ccbea02a09a5291c21749b1fc358e39", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e4cbc857d75d4e22a1f75446e7480b1f305d8d60", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "edff092a59260bf0b0a2eba219cb3da6372c2f9f", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6e2902ecc77e9760a9fc447f56d598383e2372d2", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/jfs/jfs_dtree.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.307", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.269", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.77", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.16", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.4", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.19.307"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.269"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.149"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.77"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.7.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"}, {"url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"}, {"url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"}, {"url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"}, {"url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"}, {"url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"}, {"url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"}, {"url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"}], "title": "UBSAN: array-index-out-of-bounds in dtSplitRoot", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-26T20:37:06.643976Z", "id": "CVE-2023-52603", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": 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{"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:21.262Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52603", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-26T20:37:06.643976Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-26T20:37:13.014Z"}}], "cna": {"title": "UBSAN: array-index-out-of-bounds in dtSplitRoot", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only after locally mounting a crafted JFS block/loop image and inserting a directory entry (mkdirat \u2192 jfs_mkdir \u2192 dtInsert \u2192 dtSplitUp \u2192 dtSplitRoot); fs/jfs has no network or adjacent-protocol entry path.\nAC:L - The attacker fully controls on-disk dtroot freelist/next values, so fsi becomes <-1 and the OOB indexing of rp->slot[fsi] is deterministic with an ordinary mkdir that splits the root; no race or uncontrolled state is required.\nPR:L - As with sibling JFS crafted-image CVEs, an unprivileged local session user can attach the malicious image via udisks2/polkit/automount on desktops, kiosks, and shared workstations, then trigger the bug with ordinary mkdir requiring only write access on that filesystem.\nUI:N - The attacker supplies the image, causes it to be mounted (including via automount/udisks on their own session), and drives mkdir themselves; no separate victim action is required at exploitation time.\nS:U - The out-of-bounds access corrupts host-kernel metapage/heap memory within the same OS security authority and does not cross a VM, IOMMU, or other boundary.\nC:H - Walking a corrupted freelist indexes rp->slot[] with attacker-influenced negative/out-of-range values (syzbot: index -2), producing an unbounded out-of-bounds read of adjacent kernel metapage/heap memory that can be leveraged for disclosure (KASAN also reported slab-out-of-bounds Read in dtSplitRoot).\nI:H - After the freelist walk, f->next = n performs an out-of-bounds write into the last visited slot when that slot lies outside the valid array, yielding a kernel heap/metapage corruption write primitive suitable for control-flow hijacking.\nA:H - Syzbot reproduced UBSAN array-index-out-of-bounds in dtSplitRoot that panics under panic_on_warn, and the same wild metapage access can oops/crash the kernel without UBSAN."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fd3486a893778770557649fe28afa5e463d4ed07", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7aa33854477d9c346f5560a1a1fcb3fe7783e2a8", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e4ce01c25ccbea02a09a5291c21749b1fc358e39", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e4cbc857d75d4e22a1f75446e7480b1f305d8d60", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "edff092a59260bf0b0a2eba219cb3da6372c2f9f", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6e2902ecc77e9760a9fc447f56d598383e2372d2", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16", "versionType": "git"}], "programFiles": ["fs/jfs/jfs_dtree.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.12", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.307", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.269", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.210", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.149", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.77", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.16", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.4", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/jfs/jfs_dtree.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"}, {"url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"}, {"url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"}, {"url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"}, {"url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"}, {"url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"}, {"url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"}, {"url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type 'struct dtslot [128]'\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n </TASK>\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.307", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.269", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.210", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.149", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.77", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.16", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.4", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "2.6.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:37.881Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52603", "state": "PUBLISHED", "dateUpdated": "2026-08-05T09:10:37.881Z", "dateReserved": "2024-03-02T21:55:42.573Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-06T06:45:29.731Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"versionType": "git"}, {"lessThan": "edff092a59260bf0b0a2eba219cb3da6372c2f9f", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "6e2902ecc77e9760a9fc447f56d598383e2372d2", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/jfs/jfs_dtree.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"lessThan": "2.6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.307", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.269", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.210", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.149", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.77", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.16", "versionType": "semver"}, {"lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4B4E1A83-9957-4265-94C0-516374C8CCFD", "versionEndExcluding": "4.19.307", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "319545F3-D56C-4751-BEBF-0505478BBAE8", "versionEndExcluding": "5.4.269", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F5CB4CA6-A9A0-4AFD-9102-8CF94D708170", "versionEndExcluding": "5.10.210", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0D0465BB-4053-4E15-9137-6696EBAE90FD", "versionEndExcluding": "5.15.149", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FA28946-970D-4F4D-B759-4E77B28809B5", "versionEndExcluding": "6.1.77", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A5007D6A-4B58-423A-8A3A-A1A656A263C8", "versionEndExcluding": "6.6.16", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "848BC44C-9D25-4557-A50A-4B8BF310FA78", "versionEndExcluding": "6.7.4", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUBSAN: array-index-out-of-bounds in dtSplitRoot\n\nSyzkaller reported the following issue:\n\noop0: detected capacity change from 0 to 32768\n\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type 'struct dtslot [128]'\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\n dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\n dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\n dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\n jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\n vfs_mkdir+0x3b3/0x590 fs/namei.c:4013\n do_mkdirat+0x279/0x550 fs/namei.c:4038\n __do_sys_mkdirat fs/namei.c:4053 [inline]\n __se_sys_mkdirat fs/namei.c:4051 [inline]\n __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n </TASK>\n\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\n\nThe patch is tested via syzbot."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: UBSAN: array-index-out-of-bounds en dtSplitRoot Syzkaller inform\u00f3 el siguiente problema: oop0: se detect\u00f3 un cambio de capacidad de 0 a 32768 UBSAN: array-index-out-of- l\u00edmites en fs/jfs/jfs_dtree.c:1971:9 \u00edndice -2 est\u00e1 fuera de rango para el tipo 'struct dtslot [128]' CPU: 0 PID: 3613 Comm: syz-executor270 No contaminado 6.0.0-syzkaller-09423- g493ffd6605b2 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 22/09/2022 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c: 106 ubsan_epilogue lib/ubsan.c:151 [en l\u00ednea] __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283 dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971 dtSplitUp fs/jfs/jfs_dtree.c:9 85 [en l\u00ednea ] dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863 jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013 do_mkdirat+0x279/0x550 f s/namei. c:4038 __do_sys_mkdirat fs/namei.c:4053 [en l\u00ednea] __se_sys_mkdirat fs/namei.c:4051 [en l\u00ednea] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051 do_syscall_x64 arch/x86/entry/common.c:50 [ inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fcdc0113fd9 C\u00f3digo: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 F7 48 89 D6 48 89 CA 4D 89 C2 4D 89 C8 4C 8B 4C 24 08 0F 05 &lt;48&gt; 3D 01 F0 FF FF 73 01 C3 48 C7 C1 C0 FF FF FF F7 D8 64 89 01 48 RSP: 002B: 00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00000000000000000 RCX: 00007fcdc0113fd9 RDX: 00000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0 R10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00083878000000f8 R15 : 0000000000000000 El problema se produce cuando el valor de fsi es inferior a -1. La verificaci\u00f3n para romper el ciclo cuando el valor fsi se convierte en -1 est\u00e1 presente, pero syzbot pudo producir un valor menor que -1, lo que causa el error. Este parche simplemente agrega el cambio para los valores menores que 0. El parche se prueba a trav\u00e9s de syzbot."}], "id": "CVE-2023-52603", "lastModified": "2026-08-04T10:18:33.883", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52603", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-26T20:37:06.643976Z", "version": "2.0.3"}}]}, "published": "2024-03-06T07:15:11.120", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5af"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: UBSAN: array-index-out-of-bounds in dtSplitRoot", "id": "2268299", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2268299"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nUBSAN: array-index-out-of-bounds in dtSplitRoot\nSyzkaller reported the following issue:\noop0: detected capacity change from 0 to 32768\nUBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9\nindex -2 is out of range for type 'struct dtslot [128]'\nCPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106\nubsan_epilogue lib/ubsan.c:151 [inline]\n__ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283\ndtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971\ndtSplitUp fs/jfs/jfs_dtree.c:985 [inline]\ndtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863\njfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270\nvfs_mkdir+0x3b3/0x590 fs/namei.c:4013\ndo_mkdirat+0x279/0x550 fs/namei.c:4038\n__do_sys_mkdirat fs/namei.c:4053 [inline]\n__se_sys_mkdirat fs/namei.c:4051 [inline]\n__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fcdc0113fd9\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffeb8bc67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdc0113fd9\nRDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003\nRBP: 00007fcdc00d37a0 R08: 0000000000000000 R09: 00007fcdc00d37a0\nR10: 00005555559a72c0 R11: 0000000000000246 R12: 00000000f8008000\nR13: 0000000000000000 R14: 00083878000000f8 R15: 0000000000000000\n</TASK>\nThe issue is caused when the value of fsi becomes less than -1.\nThe check to break the loop when fsi value becomes -1 is present\nbut syzbot was able to produce value less than -1 which cause the error.\nThis patch simply add the change for the values less than 0.\nThe patch is tested via syzbot."], "name": "CVE-2023-52603", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52603\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52603\nhttps://lore.kernel.org/linux-cve-announce/2024030647-CVE-2023-52603-e47b@gregkh/T"], "statement": "No Red Hat products are affected.", "threat_severity": "Moderate"}

{}