CVE-2025-39902

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39902", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.146Z", "datePublished": "2025-10-01T07:42:49.415Z", "dateUpdated": "2026-10-15T22:02:32.999Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:05:59.784Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is in the SLUB allocator's debug reporting path, reached from `___slab_alloc` when a local attacker's heap-corruption primitive (slab overflow, double free, or UAF) has poisoned a freelist pointer; no remote or adjacent network input reaches `object_err()` directly.\nAC:L - The attacker who corrupts the freelist fully controls the invalid pointer value and can force `check_valid_pointer()` to fail deterministically on the very next allocation from that slab, triggering the wild dereference reliably and repeatedly; on any deployment booted with `slab_debug`/`CONFIG_SLUB_DEBUG_ON` (Android userdebug, distro debug kernels, embedded and automotive bring-up images, CI fleets) no attacker-uncontrollable condition remains.\nPR:L - Reaching the slab allocator requires only that the attacker run code that allocates kernel memory, and the freelist-corrupting primitives that lead here are routinely reachable by unprivileged local users through ordinary syscalls; no capability check exists anywhere on the path from `kmem_cache_alloc()` to `object_err()`.\nUI:N - The attacker triggers the corruption and the subsequent allocation from its own process; no victim action, mount, or file open is required.\nS:U - The faulting read and its consequences are entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `print_trailer()` hex-dumps memory at the attacker-influenced pointer \u2014 `print_section()` on \"Redzone\", \"Object\" (up to PAGE_SIZE bytes), and \"Padding\", plus `struct track` contents and `get_freepointer()` \u2014 straight into the kernel log, so an attacker who chooses the freepointer value (plaintext absent `CONFIG_SLAB_FREELIST_HARDENED`) obtains an out-of-bounds read of arbitrary kernel memory disclosing pointers, canaries, and secrets.\nI:N - Every access on the buggy path (`print_tracking`, `get_freepointer`, `print_section`) is a read; the `set_freepointer()` fixups in `check_object()`/`on_freelist()` operate on already-validated pointers, so this defect yields no kernel write primitive of its own.\nA:H - Dereferencing the invalid pointer in `print_tracking()`/`print_section()` faults on unmapped or non-canonical memory, oopsing the kernel from inside the allocator slow path while holding `n->list_lock`, which is an unrecoverable crash rather than the graceful corruption report the code intended."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "872f2c34ff232af1e65ad2df86d61163c8ffad42", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "f66012909e7bf383fcdc5850709ed5716073fdc4", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "7e287256904ee796c9477e3ec92b07f236481ef3", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "1f0797f17927b5cad0fb7eced422f9a7c30a3191", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "0ef7058b4dc6fcef622ac23b45225db57f17b83f", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "dda6ec365ab04067adae40ef17015db447e90736", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "3baa1da473e6e50281324ff1d332d1a07a3bb02e", "status": "affected", "versionType": "git"}, {"version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "b4efccec8d06ceb10a7d34d7b1c449c569d53770", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "2.6.22", "status": "affected"}, {"version": "0", "lessThan": "2.6.22", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.299", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.243", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.192", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.151", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.105", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.46", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.6", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "2.6.22", "versionEndExcluding": "5.4.299"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "5.10.243"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "5.15.192"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "6.1.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "6.6.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "6.12.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "6.16.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.22", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42"}, {"url": "https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4"}, {"url": "https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3"}, {"url": "https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191"}, {"url": "https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f"}, {"url": "https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736"}, {"url": "https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e"}, {"url": "https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770"}], "title": "mm/slub: avoid accessing metadata when pointer is invalid in object_err()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:44:33.198Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-39902", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:54:38.930497Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T22:02:32.999Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:44:33.198Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-39902", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:54:38.930497Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:54:39.630Z"}}], "cna": {"title": "mm/slub: avoid accessing metadata when pointer is invalid in object_err()", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is in the SLUB allocator's debug reporting path, reached from `___slab_alloc` when a local attacker's heap-corruption primitive (slab overflow, double free, or UAF) has poisoned a freelist pointer; no remote or adjacent network input reaches `object_err()` directly.\nAC:L - The attacker who corrupts the freelist fully controls the invalid pointer value and can force `check_valid_pointer()` to fail deterministically on the very next allocation from that slab, triggering the wild dereference reliably and repeatedly; on any deployment booted with `slab_debug`/`CONFIG_SLUB_DEBUG_ON` (Android userdebug, distro debug kernels, embedded and automotive bring-up images, CI fleets) no attacker-uncontrollable condition remains.\nPR:L - Reaching the slab allocator requires only that the attacker run code that allocates kernel memory, and the freelist-corrupting primitives that lead here are routinely reachable by unprivileged local users through ordinary syscalls; no capability check exists anywhere on the path from `kmem_cache_alloc()` to `object_err()`.\nUI:N - The attacker triggers the corruption and the subsequent allocation from its own process; no victim action, mount, or file open is required.\nS:U - The faulting read and its consequences are entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `print_trailer()` hex-dumps memory at the attacker-influenced pointer \u2014 `print_section()` on \"Redzone\", \"Object\" (up to PAGE_SIZE bytes), and \"Padding\", plus `struct track` contents and `get_freepointer()` \u2014 straight into the kernel log, so an attacker who chooses the freepointer value (plaintext absent `CONFIG_SLAB_FREELIST_HARDENED`) obtains an out-of-bounds read of arbitrary kernel memory disclosing pointers, canaries, and secrets.\nI:N - Every access on the buggy path (`print_tracking`, `get_freepointer`, `print_section`) is a read; the `set_freepointer()` fixups in `check_object()`/`on_freelist()` operate on already-validated pointers, so this defect yields no kernel write primitive of its own.\nA:H - Dereferencing the invalid pointer in `print_tracking()`/`print_section()` faults on unmapped or non-canonical memory, oopsing the kernel from inside the allocator slow path while holding `n->list_lock`, which is an unrecoverable crash rather than the graceful corruption report the code intended."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "872f2c34ff232af1e65ad2df86d61163c8ffad42", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "f66012909e7bf383fcdc5850709ed5716073fdc4", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "7e287256904ee796c9477e3ec92b07f236481ef3", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "1f0797f17927b5cad0fb7eced422f9a7c30a3191", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "0ef7058b4dc6fcef622ac23b45225db57f17b83f", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "dda6ec365ab04067adae40ef17015db447e90736", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "3baa1da473e6e50281324ff1d332d1a07a3bb02e", "versionType": "git"}, {"status": "affected", "version": "81819f0fc8285a2a5a921c019e3e3d7b6169d225", "lessThan": "b4efccec8d06ceb10a7d34d7b1c449c569d53770", "versionType": "git"}], "programFiles": ["mm/slub.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.22"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.22", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.299", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.243", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.192", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.151", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.105", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.46", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.6", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["mm/slub.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42"}, {"url": "https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4"}, {"url": "https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3"}, {"url": "https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191"}, {"url": "https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f"}, {"url": "https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736"}, {"url": "https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e"}, {"url": "https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.299", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.243", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.192", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.151", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.105", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.46", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16.6", "versionStartIncluding": "2.6.22"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.17", "versionStartIncluding": "2.6.22"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:05:59.784Z"}}}, "cveMetadata": {"cveId": "CVE-2025-39902", "state": "PUBLISHED", "dateUpdated": "2026-10-15T22:02:32.999Z", "dateReserved": "2025-04-16T07:20:57.146Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-10-01T07:42:49.415Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.192", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.151", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.105", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.46", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6E6505A1-1A82-4CE4-A959-9D1B9E2BDE81", "versionEndExcluding": "5.4.299", "versionStartIncluding": "2.6.22", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", 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false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmm/slub: evitar acceder a metadatos cuando el puntero es inv\u00e1lido en object_err()\n\nobject_err() informa detalles de un objeto para depuraci\u00f3n adicional, como el puntero de la freelist, la redzone, etc. Sin embargo, si el puntero es inv\u00e1lido, intentar acceder a los metadatos del objeto puede provocar un fallo ya que no apunta a un objeto v\u00e1lido.\n\nUna ruta conocida al fallo es cuando alloc_consistency_checks() determina que el puntero al objeto asignado es inv\u00e1lido debido a una corrupci\u00f3n de la freelist, y llama a object_err() para informarlo. El c\u00f3digo de depuraci\u00f3n deber\u00eda informar y manejar la corrupci\u00f3n de manera elegante y no fallar en el proceso.\n\nEn caso de que el puntero sea NULL o check_valid_pointer() devuelva falso para el puntero, solo imprimir el valor del puntero y omitir el acceso a los metadatos."}], "id": "CVE-2025-39902", "lastModified": "2026-10-19T21:10:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39902", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:54:38.930497Z", "version": "2.0.3"}}]}, "published": "2025-10-01T08:15:32.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ef7058b4dc6fcef622ac23b45225db57f17b83f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f0797f17927b5cad0fb7eced422f9a7c30a3191"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3baa1da473e6e50281324ff1d332d1a07a3bb02e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e287256904ee796c9477e3ec92b07f236481ef3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/872f2c34ff232af1e65ad2df86d61163c8ffad42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b4efccec8d06ceb10a7d34d7b1c449c569d53770"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dda6ec365ab04067adae40ef17015db447e90736"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f66012909e7bf383fcdc5850709ed5716073fdc4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mm/slub: avoid accessing metadata when pointer is invalid in object_err()", "id": "2400594", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400594"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata."], "name": "CVE-2025-39902", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39902\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39902\nhttps://lore.kernel.org/linux-cve-announce/2025100118-CVE-2025-39902-0fe1@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-02T08:40:09.213258+00:00", "updated": "2025-10-02T08:40:09.213306+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}