CVE-2024-53125

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-53125", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:24.995Z", "datePublished": "2024-12-04T14:11:09.326Z", "dateUpdated": "2026-10-15T21:41:45.968Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:55.135Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: sync_linked_regs() must preserve subreg_def\n\nRange propagation must not affect subreg_def marks, otherwise the\nfollowing example is rewritten by verifier incorrectly when\nBPF_F_TEST_RND_HI32 flag is set:\n\n 0: call bpf_ktime_get_ns call bpf_ktime_get_ns\n 1: r0 &= 0x7fffffff after verifier r0 &= 0x7fffffff\n 2: w1 = w0 rewrites w1 = w0\n 3: if w0 < 10 goto +0 --------------> r11 = 0x2f5674a6 (r)\n 4: r1 >>= 32 r11 <<= 32 (r)\n 5: r0 = r1 r1 |= r11 (r)\n 6: exit; if w0 < 0xa goto pc+0\n r1 >>= 32\n r0 = r1\n exit\n\n(or zero extension of w1 at (2) is missing for architectures that\n require zero extension for upper register half).\n\nThe following happens w/o this patch:\n- r0 is marked as not a subreg at (0);\n- w1 is marked as subreg at (2);\n- w1 subreg_def is overridden at (3) by copy_register_state();\n- w1 is read at (5) but mark_insn_zext() does not mark (2)\n for zero extension, because w1 subreg_def is not set;\n- because of BPF_F_TEST_RND_HI32 flag verifier inserts random\n value for hi32 bits of (2) (marked (r));\n- this random value is read at (5)."}], "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 flaw is in the BPF verifier and is reached only by loading a crafted eBPF program through the local `bpf(BPF_PROG_LOAD)` syscall. There is no remote or adjacent path to `check_cond_jmp_op()`/`sync_linked_regs()`.\nAC:L - The attacker authors the entire BPF instruction sequence, so the register-linking, conditional jump, and the stale upper-32-bit value are fully deterministic and under their control. On the affected architectures (ppc64, s390x, riscv, sparc64, mips, arm32, parisc, x86-32 \u2014 all major deployment targets from cloud mainframes to embedded/automotive) the missing zero-extension is emitted reliably on every run.\nPR:L - An unprivileged local user can load BPF_PROG_TYPE_SOCKET_FILTER/CGROUP_SKB programs whenever `kernel.unprivileged_bpf_disabled=0`, and container users can load programs via delegated BPF tokens; otherwise only CAP_BPF, not real root, is needed. No administrative privilege in the init namespace is required.\nUI:N - The attacker loads and runs their own BPF program end-to-end; no action by any other user or administrator is involved.\nS:U - The corruption stays within the kernel's own security authority \u2014 it is a standard local privilege-escalation primitive with no VM, IOMMU, or sandbox boundary crossed.\nC:H - The verifier believes the register is zero-extended and range-bounded while at runtime its upper 32 bits hold an attacker-supplied value, so bounds checks on map-value/stack accesses are bypassed with an attacker-chosen 64-bit displacement, yielding arbitrary kernel memory disclosure.\nI:H - The same verifier/runtime divergence permits out-of-bounds *writes* at an attacker-controlled offset, providing an arbitrary kernel write primitive suitable for control-flow hijacking and privilege escalation.\nA:H - Out-of-bounds accesses at an unbounded attacker-controlled offset trivially fault on unmapped or protected kernel memory, causing an oops or panic; the incorrectly JITed program also executes with garbage register state."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "dadf82c1b2608727bcc306843b540cd7414055a7", "status": "affected", "versionType": "git"}, {"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "b57ac2d92c1f565743f6890a5b9cf317ed856b09", "status": "affected", "versionType": "git"}, {"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "60fd3538d2a8fd44c41d25088c0ece3e1fd30659", "status": "affected", "versionType": "git"}, {"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84", "status": "affected", "versionType": "git"}, {"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0", "status": "affected", "versionType": "git"}, {"version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "e9bd9c498cb0f5843996dbe5cbce7a1836a83c70", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.232", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.175", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.121", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.67", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "5.10", "versionEndExcluding": "5.10.232"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.121"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.67"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.11.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/dadf82c1b2608727bcc306843b540cd7414055a7"}, {"url": "https://git.kernel.org/stable/c/b57ac2d92c1f565743f6890a5b9cf317ed856b09"}, {"url": "https://git.kernel.org/stable/c/60fd3538d2a8fd44c41d25088c0ece3e1fd30659"}, {"url": "https://git.kernel.org/stable/c/bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84"}, {"url": "https://git.kernel.org/stable/c/e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0"}, {"url": "https://git.kernel.org/stable/c/e9bd9c498cb0f5843996dbe5cbce7a1836a83c70"}], "title": "bpf: sync_linked_regs() must preserve subreg_def", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:46:07.020Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-53125", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:40:40.266518Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:45.968Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:46:07.020Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-53125", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:40:40.266518Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:40:41.083Z"}}], "cna": {"title": "bpf: sync_linked_regs() must preserve subreg_def", "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 flaw is in the BPF verifier and is reached only by loading a crafted eBPF program through the local `bpf(BPF_PROG_LOAD)` syscall. There is no remote or adjacent path to `check_cond_jmp_op()`/`sync_linked_regs()`.\nAC:L - The attacker authors the entire BPF instruction sequence, so the register-linking, conditional jump, and the stale upper-32-bit value are fully deterministic and under their control. On the affected architectures (ppc64, s390x, riscv, sparc64, mips, arm32, parisc, x86-32 \u2014 all major deployment targets from cloud mainframes to embedded/automotive) the missing zero-extension is emitted reliably on every run.\nPR:L - An unprivileged local user can load BPF_PROG_TYPE_SOCKET_FILTER/CGROUP_SKB programs whenever `kernel.unprivileged_bpf_disabled=0`, and container users can load programs via delegated BPF tokens; otherwise only CAP_BPF, not real root, is needed. No administrative privilege in the init namespace is required.\nUI:N - The attacker loads and runs their own BPF program end-to-end; no action by any other user or administrator is involved.\nS:U - The corruption stays within the kernel's own security authority \u2014 it is a standard local privilege-escalation primitive with no VM, IOMMU, or sandbox boundary crossed.\nC:H - The verifier believes the register is zero-extended and range-bounded while at runtime its upper 32 bits hold an attacker-supplied value, so bounds checks on map-value/stack accesses are bypassed with an attacker-chosen 64-bit displacement, yielding arbitrary kernel memory disclosure.\nI:H - The same verifier/runtime divergence permits out-of-bounds *writes* at an attacker-controlled offset, providing an arbitrary kernel write primitive suitable for control-flow hijacking and privilege escalation.\nA:H - Out-of-bounds accesses at an unbounded attacker-controlled offset trivially fault on unmapped or protected kernel memory, causing an oops or panic; the incorrectly JITed program also executes with garbage register state."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "dadf82c1b2608727bcc306843b540cd7414055a7", "versionType": "git"}, {"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "b57ac2d92c1f565743f6890a5b9cf317ed856b09", "versionType": "git"}, {"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "60fd3538d2a8fd44c41d25088c0ece3e1fd30659", "versionType": "git"}, {"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84", "versionType": "git"}, {"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0", "versionType": "git"}, {"status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "lessThan": "e9bd9c498cb0f5843996dbe5cbce7a1836a83c70", "versionType": "git"}], "programFiles": ["kernel/bpf/verifier.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.232", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.175", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.121", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.67", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.11.6", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/verifier.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/dadf82c1b2608727bcc306843b540cd7414055a7"}, {"url": "https://git.kernel.org/stable/c/b57ac2d92c1f565743f6890a5b9cf317ed856b09"}, {"url": "https://git.kernel.org/stable/c/60fd3538d2a8fd44c41d25088c0ece3e1fd30659"}, {"url": "https://git.kernel.org/stable/c/bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84"}, {"url": "https://git.kernel.org/stable/c/e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0"}, {"url": "https://git.kernel.org/stable/c/e9bd9c498cb0f5843996dbe5cbce7a1836a83c70"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: sync_linked_regs() must preserve subreg_def\n\nRange propagation must not affect subreg_def marks, otherwise the\nfollowing example is rewritten by verifier incorrectly when\nBPF_F_TEST_RND_HI32 flag is set:\n\n 0: call bpf_ktime_get_ns call bpf_ktime_get_ns\n 1: r0 &= 0x7fffffff after verifier r0 &= 0x7fffffff\n 2: w1 = w0 rewrites w1 = w0\n 3: if w0 < 10 goto +0 --------------> r11 = 0x2f5674a6 (r)\n 4: r1 >>= 32 r11 <<= 32 (r)\n 5: r0 = r1 r1 |= r11 (r)\n 6: exit; if w0 < 0xa goto pc+0\n r1 >>= 32\n r0 = r1\n exit\n\n(or zero extension of w1 at (2) is missing for architectures that\n require zero extension for upper register half).\n\nThe following happens w/o this patch:\n- r0 is marked as not a subreg at (0);\n- w1 is marked as subreg at (2);\n- w1 subreg_def is overridden at (3) by copy_register_state();\n- w1 is read at (5) but mark_insn_zext() does not mark (2)\n for zero extension, because w1 subreg_def is not set;\n- because of BPF_F_TEST_RND_HI32 flag verifier inserts random\n value for hi32 bits of (2) (marked (r));\n- this random value is read at (5)."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.232", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.175", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.121", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.67", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.6", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "5.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:55.135Z"}}}, "cveMetadata": {"cveId": "CVE-2024-53125", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:41:45.968Z", "dateReserved": "2024-11-19T17:17:24.995Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-12-04T14:11:09.326Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "dadf82c1b2608727bcc306843b540cd7414055a7", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}, {"lessThan": "b57ac2d92c1f565743f6890a5b9cf317ed856b09", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}, {"lessThan": "60fd3538d2a8fd44c41d25088c0ece3e1fd30659", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}, {"lessThan": "bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}, {"lessThan": "e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}, {"lessThan": "e9bd9c498cb0f5843996dbe5cbce7a1836a83c70", "status": "affected", "version": "75748837b7e56919679e02163f45d5818c644d03", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"lessThan": "5.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.232", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.175", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.121", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.67", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B50D4783-5CDB-499A-93A7-623C72578301", "versionEndExcluding": "5.10.232", "versionStartIncluding": "5.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7A1F3620-6900-4852-9229-C3527377EBDA", "versionEndExcluding": "5.15.175", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8DA16A0-9C6E-493E-90EE-309A34901477", "versionEndExcluding": "6.1.121", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BF4F2CD1-2CA6-4D6B-9B0C-57C3C4D6544A", "versionEndExcluding": "6.6.67", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E4486B12-007B-4794-9857-F07145637AA1", "versionEndExcluding": "6.11.6", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: sync_linked_regs() must preserve subreg_def\n\nRange propagation must not affect subreg_def marks, otherwise the\nfollowing example is rewritten by verifier incorrectly when\nBPF_F_TEST_RND_HI32 flag is set:\n\n 0: call bpf_ktime_get_ns call bpf_ktime_get_ns\n 1: r0 &= 0x7fffffff after verifier r0 &= 0x7fffffff\n 2: w1 = w0 rewrites w1 = w0\n 3: if w0 < 10 goto +0 --------------> r11 = 0x2f5674a6 (r)\n 4: r1 >>= 32 r11 <<= 32 (r)\n 5: r0 = r1 r1 |= r11 (r)\n 6: exit; if w0 < 0xa goto pc+0\n r1 >>= 32\n r0 = r1\n exit\n\n(or zero extension of w1 at (2) is missing for architectures that\n require zero extension for upper register half).\n\nThe following happens w/o this patch:\n- r0 is marked as not a subreg at (0);\n- w1 is marked as subreg at (2);\n- w1 subreg_def is overridden at (3) by copy_register_state();\n- w1 is read at (5) but mark_insn_zext() does not mark (2)\n for zero extension, because w1 subreg_def is not set;\n- because of BPF_F_TEST_RND_HI32 flag verifier inserts random\n value for hi32 bits of (2) (marked (r));\n- this random value is read at (5)."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: sync_linked_regs() debe preservar subreg_def La propagaci\u00f3n del rango no debe afectar a las marcas subreg_def, de lo contrario el siguiente ejemplo es reescrito incorrectamente por el verificador cuando el indicador BPF_F_TEST_RND_HI32 est\u00e1 establecido: 0: llamar a bpf_ktime_get_ns llamar a bpf_ktime_get_ns 1: r0 &amp;= 0x7fffffff despu\u00e9s del verificador r0 &amp;= 0x7fffffff 2: w1 = w0 reescribe w1 = w0 3: si w0 &lt; 10 goto +0 --------------&gt; r11 = 0x2f5674a6 (r) 4: r1 &gt;&gt;= 32 r11 &lt;&lt;= 32 (r) 5: r0 = r1 r1 |= r11 (r) 6: salir; si w0 &lt; 0xa goto pc+0 r1 &gt;&gt;= 32 r0 = r1 salir (o falta la extensi\u00f3n cero de w1 en (2) para arquitecturas que requieren extensi\u00f3n cero para la mitad superior del registro). Lo siguiente ocurre sin este parche: - r0 est\u00e1 marcado como no un subreg en (0); - w1 est\u00e1 marcado como subreg en (2); - el subreg_def de w1 es anulado en (3) por copy_register_state(); - w1 se lee en (5) pero mark_insn_zext() no marca (2) para extensi\u00f3n cero, porque el subreg_def de w1 no est\u00e1 configurado; - debido al indicador BPF_F_TEST_RND_HI32, el verificador inserta un valor aleatorio para los bits hi32 de (2) (marcado (r)); - este valor aleatorio se lee en (5)."}], "id": "CVE-2024-53125", "lastModified": "2026-10-15T22:17:59.843", "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": 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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-53125", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:40:40.266518Z", "version": "2.0.3"}}]}, "published": "2024-12-04T14:15:20.460", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60fd3538d2a8fd44c41d25088c0ece3e1fd30659"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b57ac2d92c1f565743f6890a5b9cf317ed856b09"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bfe9446ea1d95f6cb7848da19dfd58d2eec6fd84"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dadf82c1b2608727bcc306843b540cd7414055a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e2ef0f317a52e678fe8fa84b94d6a15b466d6ff0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e9bd9c498cb0f5843996dbe5cbce7a1836a83c70"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "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: bpf: sync_linked_regs() must preserve subreg_def", "id": "2330351", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2330351"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-682", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: sync_linked_regs() must preserve subreg_def\nRange propagation must not affect subreg_def marks, otherwise the\nfollowing example is rewritten by verifier incorrectly when\nBPF_F_TEST_RND_HI32 flag is set:\n0: call bpf_ktime_get_ns call bpf_ktime_get_ns\n1: r0 &= 0x7fffffff after verifier r0 &= 0x7fffffff\n2: w1 = w0 rewrites w1 = w0\n3: if w0 < 10 goto +0 --------------> r11 = 0x2f5674a6 (r)\n4: r1 >>= 32 r11 <<= 32 (r)\n5: r0 = r1 r1 |= r11 (r)\n6: exit; if w0 < 0xa goto pc+0\nr1 >>= 32\nr0 = r1\nexit\n(or zero extension of w1 at (2) is missing for architectures that\nrequire zero extension for upper register half).\nThe following happens w/o this patch:\n- r0 is marked as not a subreg at (0);\n- w1 is marked as subreg at (2);\n- w1 subreg_def is overridden at (3) by copy_register_state();\n- w1 is read at (5) but mark_insn_zext() does not mark (2)\nfor zero extension, because w1 subreg_def is not set;\n- because of BPF_F_TEST_RND_HI32 flag verifier inserts random\nvalue for hi32 bits of (2) (marked (r));\n- this random value is read at (5)."], "name": "CVE-2024-53125", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-53125\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-53125\nhttps://lore.kernel.org/linux-cve-announce/2024120413-CVE-2024-53125-69ff@gregkh/T"], "statement": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\nFor the Red Hat Enterprise Linux 9 to confirm the current state, inspect the sysctl with the command:\ncat /proc/sys/kernel/unprivileged_bpf_disabled\nThe setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw.", "threat_severity": "Low"}

{"created": "2025-07-12T22:44:53.081912+00:00", "updated": "2025-07-12T22:44:53.082011+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}