CVE-2025-38164

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38164", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.991Z", "datePublished": "2025-07-03T08:36:05.017Z", "dateUpdated": "2026-08-05T11:59:57.616Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:59:57.616Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: zone: fix to avoid inconsistence in between SIT and SSA\n\nw/ below testcase, it will cause inconsistence in between SIT and SSA.\n\ncreate_null_blk 512 2 1024 1024\nmkfs.f2fs -m /dev/nullb0\nmount /dev/nullb0 /mnt/f2fs/\ntouch /mnt/f2fs/file\nf2fs_io pinfile set /mnt/f2fs/file\nfallocate -l 4GiB /mnt/f2fs/file\n\nF2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT\nCPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G O 6.13.0-rc1 #84\nTainted: [O]=OOT_MODULE\nHardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006\nCall Trace:\n <TASK>\n dump_stack_lvl+0xb3/0xd0\n dump_stack+0x14/0x20\n f2fs_handle_critical_error+0x18c/0x220 [f2fs]\n f2fs_stop_checkpoint+0x38/0x50 [f2fs]\n do_garbage_collect+0x674/0x6e0 [f2fs]\n f2fs_gc_range+0x12b/0x230 [f2fs]\n f2fs_allocate_pinning_section+0x5c/0x150 [f2fs]\n f2fs_expand_inode_data+0x1cc/0x3c0 [f2fs]\n f2fs_fallocate+0x3c3/0x410 [f2fs]\n vfs_fallocate+0x15f/0x4b0\n __x64_sys_fallocate+0x4a/0x80\n x64_sys_call+0x15e8/0x1b80\n do_syscall_64+0x68/0x130\n entry_SYSCALL_64_after_hwframe+0x67/0x6f\nRIP: 0033:0x7f9dba5197ca\nF2FS-fs (nullb0): Stopped filesystem due to reason: 4\n\nThe reason is f2fs_gc_range() may try to migrate block in curseg, however,\nits SSA block is not uptodate due to the last summary block data is still\nin cache of curseg.\n\nIn this patch, we add a condition in f2fs_gc_range() to check whether\nsection is opened or not, and skip block migration for opened section."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The trigger is entirely local \u2014 an `ioctl(F2FS_IOC_SET_PIN_FILE)` followed by a `fallocate(2)` syscall on a file the attacker created on a mounted f2fs volume. No network or adjacent-network reachability exists.\nAC:L - The reproducer is deterministic and single-threaded: touch, pin, fallocate 4GiB immediately shuts the filesystem down, with no race to win and no memory-layout dependency. On the affected configuration (f2fs on a zoned device, as shipped on Android zUFS and SMR/ZNS storage) every attempt succeeds.\nPR:L - `f2fs_ioc_set_pin_file()` performs no capability check whatsoever \u2014 only regular-file and write-access checks \u2014 and `f2fs_fallocate()` is unprivileged, so any local user or sandboxed app with write access to a directory on the f2fs mount (e.g. Android `/data`) can reach `f2fs_allocate_pinning_section()`.\nUI:N - The attacker performs every step itself; no victim action is required beyond the filesystem already being mounted, which is normal system state.\nS:U - The vulnerability and its impact are both confined to the kernel/filesystem security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - There is no read primitive \u2014 the stale-summary entries are rejected by `is_alive()`'s blkaddr comparison and `__set_test_and_free()` prevents a cursec from being re-handed out, so no memory or cross-file data is disclosed.\nI:H - The bug drives GC to migrate blocks in a section a log is actively writing, producing the SIT/SSA inconsistency the fix is named for, setting `SBI_NEED_FSCK` and recording `STOP_CP_REASON_CORRUPTED_SUMMARY` in the superblock so the volume requires repair; the forced checkpoint stop also discards other users' uncheckpointed data on the shared filesystem, a consequence the unprivileged attacker inflicts system-wide.\nA:H - `f2fs_handle_critical_error()` either panics the kernel outright under `errors=panic`, or sets `CP_ERROR_FLAG` so the entire filesystem returns `-EIO` for all subsequent operations until unmount and fsck \u2014 on a device whose `/data` or root volume is zoned f2fs this is a complete, unprivileged denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/gc.c"], "versions": [{"version": "40d76c393cca83938b11eb7ca8983aa3cd0ed69b", "lessThan": "d1365d2abfaf2d85ee51a005da3ca373aea97f6a", "status": "affected", "versionType": "git"}, {"version": "9703d69d9d153bb230711d0d577454552aeb13d4", "lessThan": "44a51592ac657d8e422585414d7ec17a5b50fb0e", "status": "affected", "versionType": "git"}, {"version": "9703d69d9d153bb230711d0d577454552aeb13d4", "lessThan": "8d9431b0d11a5030aa1ce477defee455b3821701", "status": "affected", "versionType": "git"}, {"version": "9703d69d9d153bb230711d0d577454552aeb13d4", "lessThan": "773704c1ef96a8b70d0d186ab725f50548de82c4", "status": "affected", "versionType": "git"}, {"version": "6.6.33", "lessThan": "6.6.130", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/gc.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.34", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.3", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "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": "6.6.33", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.12.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.15.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d1365d2abfaf2d85ee51a005da3ca373aea97f6a"}, {"url": "https://git.kernel.org/stable/c/44a51592ac657d8e422585414d7ec17a5b50fb0e"}, {"url": "https://git.kernel.org/stable/c/8d9431b0d11a5030aa1ce477defee455b3821701"}, {"url": "https://git.kernel.org/stable/c/773704c1ef96a8b70d0d186ab725f50548de82c4"}], "title": "f2fs: zone: fix to avoid inconsistence in between SIT and SSA", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/f2fs/gc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d1365d2abfaf2d85ee51a005da3ca373aea97f6a", "status": "affected", "version": "40d76c393cca83938b11eb7ca8983aa3cd0ed69b", "versionType": "git"}, {"lessThan": "44a51592ac657d8e422585414d7ec17a5b50fb0e", "status": "affected", "version": "9703d69d9d153bb230711d0d577454552aeb13d4", "versionType": "git"}, {"lessThan": "8d9431b0d11a5030aa1ce477defee455b3821701", "status": "affected", "version": "9703d69d9d153bb230711d0d577454552aeb13d4", "versionType": "git"}, {"lessThan": "773704c1ef96a8b70d0d186ab725f50548de82c4", "status": "affected", "version": "9703d69d9d153bb230711d0d577454552aeb13d4", "versionType": "git"}, {"lessThan": "6.6.130", "status": "affected", "version": "6.6.33", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/f2fs/gc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.130", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.34", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DABC3520-445B-4314-9ECC-75F9E79161E4", "versionEndExcluding": "6.7", "versionStartIncluding": "6.6.33", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A373E395-B1B2-445B-8784-2A89BF879AD5", "versionEndExcluding": "6.12.34", "versionStartIncluding": "6.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92", "versionEndExcluding": "6.15.3", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: zone: fix to avoid inconsistence in between SIT and SSA\n\nw/ below testcase, it will cause inconsistence in between SIT and SSA.\n\ncreate_null_blk 512 2 1024 1024\nmkfs.f2fs -m /dev/nullb0\nmount /dev/nullb0 /mnt/f2fs/\ntouch /mnt/f2fs/file\nf2fs_io pinfile set /mnt/f2fs/file\nfallocate -l 4GiB /mnt/f2fs/file\n\nF2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT\nCPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G O 6.13.0-rc1 #84\nTainted: [O]=OOT_MODULE\nHardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006\nCall Trace:\n <TASK>\n dump_stack_lvl+0xb3/0xd0\n dump_stack+0x14/0x20\n f2fs_handle_critical_error+0x18c/0x220 [f2fs]\n f2fs_stop_checkpoint+0x38/0x50 [f2fs]\n do_garbage_collect+0x674/0x6e0 [f2fs]\n f2fs_gc_range+0x12b/0x230 [f2fs]\n f2fs_allocate_pinning_section+0x5c/0x150 [f2fs]\n f2fs_expand_inode_data+0x1cc/0x3c0 [f2fs]\n f2fs_fallocate+0x3c3/0x410 [f2fs]\n vfs_fallocate+0x15f/0x4b0\n __x64_sys_fallocate+0x4a/0x80\n x64_sys_call+0x15e8/0x1b80\n do_syscall_64+0x68/0x130\n entry_SYSCALL_64_after_hwframe+0x67/0x6f\nRIP: 0033:0x7f9dba5197ca\nF2FS-fs (nullb0): Stopped filesystem due to reason: 4\n\nThe reason is f2fs_gc_range() may try to migrate block in curseg, however,\nits SSA block is not uptodate due to the last summary block data is still\nin cache of curseg.\n\nIn this patch, we add a condition in f2fs_gc_range() to check whether\nsection is opened or not, and skip block migration for opened section."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: zona: correcci\u00f3n para evitar inconsistencia entre SIT y SSA con el siguiente caso de prueba, provocar\u00e1 inconsistencia entre SIT y SSA. create_null_blk 512 2 1024 1024 mkfs.f2fs -m /dev/nullb0 mount /dev/nullb0 /mnt/f2fs/ touch /mnt/f2fs/file f2fs_io pinfile set /mnt/f2fs/file fallocate -l 4GiB /mnt/f2fs/file F2FS-fs (nullb0): Segmento inconsistente (0) tipo [1, 0] en SSA y SIT CPU: 5 UID: 0 PID: 2398 Comm: fallocate Contaminado: GO 6.13.0-rc1 #84 Contaminado: [O]=OOT_MODULE Nombre del hardware: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 Rastreo de llamadas dump_stack_lvl+0xb3/0xd0 dump_stack+0x14/0x20 f2fs_handle_critical_error+0x18c/0x220 [f2fs] f2fs_stop_checkpoint+0x38/0x50 [f2fs] do_garbage_collect+0x674/0x6e0 [f2fs] f2fs_gc_range+0x12b/0x230 [f2fs] f2fs_allocate_pinning_section+0x5c/0x150 [f2fs] f2fs_expand_inode_data+0x1cc/0x3c0 [f2fs] f2fs_fallocate+0x3c3/0x410 [f2fs] vfs_fallocate+0x15f/0x4b0 __x64_sys_fallocate+0x4a/0x80 x64_sys_call+0x15e8/0x1b80 do_syscall_64+0x68/0x130 entry_SYSCALL_64_after_hwframe+0x67/0x6f RIP: 0033:0x7f9dba5197ca F2FS-fs (nullb0): Sistema de archivos detenido por el motivo: 4. El motivo es que f2fs_gc_range() podr\u00eda intentar migrar un bloque en curseg; sin embargo, su bloque SSA no est\u00e1 actualizado debido a que los \u00faltimos datos del bloque de resumen a\u00fan se encuentran en la cach\u00e9 de curseg. En este parche, a\u00f1adimos una condici\u00f3n en f2fs_gc_range() para comprobar si la secci\u00f3n est\u00e1 abierta y omitir la migraci\u00f3n del bloque en la secci\u00f3n abierta."}], "id": "CVE-2025-38164", "lastModified": "2026-07-30T06:22:56.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-07-03T09:15:31.863", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/44a51592ac657d8e422585414d7ec17a5b50fb0e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/773704c1ef96a8b70d0d186ab725f50548de82c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d9431b0d11a5030aa1ce477defee455b3821701"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1365d2abfaf2d85ee51a005da3ca373aea97f6a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: f2fs: zone: fix to avoid inconsistence in between SIT and SSA", "id": "2376033", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376033"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nf2fs: zone: fix to avoid inconsistence in between SIT and SSA\nw/ below testcase, it will cause inconsistence in between SIT and SSA.\ncreate_null_blk 512 2 1024 1024\nmkfs.f2fs -m /dev/nullb0\nmount /dev/nullb0 /mnt/f2fs/\ntouch /mnt/f2fs/file\nf2fs_io pinfile set /mnt/f2fs/file\nfallocate -l 4GiB /mnt/f2fs/file\nF2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT\nCPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G O 6.13.0-rc1 #84\nTainted: [O]=OOT_MODULE\nHardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006\nCall Trace:\n<TASK>\ndump_stack_lvl+0xb3/0xd0\ndump_stack+0x14/0x20\nf2fs_handle_critical_error+0x18c/0x220 [f2fs]\nf2fs_stop_checkpoint+0x38/0x50 [f2fs]\ndo_garbage_collect+0x674/0x6e0 [f2fs]\nf2fs_gc_range+0x12b/0x230 [f2fs]\nf2fs_allocate_pinning_section+0x5c/0x150 [f2fs]\nf2fs_expand_inode_data+0x1cc/0x3c0 [f2fs]\nf2fs_fallocate+0x3c3/0x410 [f2fs]\nvfs_fallocate+0x15f/0x4b0\n__x64_sys_fallocate+0x4a/0x80\nx64_sys_call+0x15e8/0x1b80\ndo_syscall_64+0x68/0x130\nentry_SYSCALL_64_after_hwframe+0x67/0x6f\nRIP: 0033:0x7f9dba5197ca\nF2FS-fs (nullb0): Stopped filesystem due to reason: 4\nThe reason is f2fs_gc_range() may try to migrate block in curseg, however,\nits SSA block is not uptodate due to the last summary block data is still\nin cache of curseg.\nIn this patch, we add a condition in f2fs_gc_range() to check whether\nsection is opened or not, and skip block migration for opened section."], "name": "CVE-2025-38164", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2025-07-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38164\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38164\nhttps://lore.kernel.org/linux-cve-announce/2025070340-CVE-2025-38164-2a23@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-06T22:16:23.705023+00:00", "updated": "2025-07-06T22:16:23.705075+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}