CVE-2025-39910

{"id": "CVE-2025-39910", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39910", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T17:42:43.252504Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "c136f2e4f2edd58a62a3425d4dd373d82834d1f9", "versionType": "git"}, {"status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "9598c83a50a5f9d57fd0c12fc08d9425c1ce9537", "versionType": "git"}, {"status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "aa1b4b7a1b92743297f9da741424df4703a8e11b", "versionType": "git"}, {"status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "33b95d90427cb4babf32059e323a6d0c027610fe", "versionType": "git"}, {"status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "79357cd06d41d0f5a11b17d7c86176e395d10ef2", "versionType": "git"}], "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"status": "unaffected", "version": "0", "lessThan": "5.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.8", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "defaultStatus": "affected"}]}], "published": "2025-10-01T08:15:33.993", "references": [{"url": "https://git.kernel.org/stable/c/33b95d90427cb4babf32059e323a6d0c027610fe", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/79357cd06d41d0f5a11b17d7c86176e395d10ef2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9598c83a50a5f9d57fd0c12fc08d9425c1ce9537", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/aa1b4b7a1b92743297f9da741424df4703a8e11b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c136f2e4f2edd58a62a3425d4dd373d82834d1f9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-667"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-667"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()\n\nkasan_populate_vmalloc() and its helpers ignore the caller's gfp_mask and\nalways allocate memory using the hardcoded GFP_KERNEL flag. This makes\nthem inconsistent with vmalloc(), which was recently extended to support\nGFP_NOFS and GFP_NOIO allocations.\n\nPage table allocations performed during shadow population also ignore the\nexternal gfp_mask. To preserve the intended semantics of GFP_NOFS and\nGFP_NOIO, wrap the apply_to_page_range() calls into the appropriate\nmemalloc scope.\n\nxfs calls vmalloc with GFP_NOFS, so this bug could lead to deadlock.\n\nThere was a report here\nhttps://lkml.kernel.org/r/686ea951.050a0220.385921.0016.GAE@google.com\n\nThis patch:\n - Extends kasan_populate_vmalloc() and helpers to take gfp_mask;\n - Passes gfp_mask down to alloc_pages_bulk() and __get_free_page();\n - Enforces GFP_NOFS/NOIO semantics with memalloc_*_save()/restore()\n around apply_to_page_range();\n - Updates vmalloc.c and percpu allocator call sites accordingly."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmm/vmalloc, mm/kasan: respetar la m\u00e1scara gfp en kasan_populate_vmalloc()\n\nkasan_populate_vmalloc() y sus funciones auxiliares ignoran la gfp_mask del llamador y siempre asignan memoria utilizando la bandera GFP_KERNEL codificada. Esto los hace inconsistentes con vmalloc(), que fue extendida recientemente para soportar asignaciones GFP_NOFS y GFP_NOIO.\n\nLas asignaciones de tablas de p\u00e1ginas realizadas durante la poblaci\u00f3n de sombra tambi\u00e9n ignoran la gfp_mask externa. Para preservar la sem\u00e1ntica prevista de GFP_NOFS y GFP_NOIO, envuelva las llamadas a apply_to_page_range() dentro del \u00e1mbito memalloc apropiado.\n\nxfs llama a vmalloc con GFP_NOFS, por lo que este error podr\u00eda llevar a un interbloqueo.\n\nHubo un informe aqu\u00ed https://lkml.kernel.org/r/686ea951.050a0220.385921.0016.GAE@google.com\n\nEste parche:\n - Extiende kasan_populate_vmalloc() y sus funciones auxiliares para que acepten gfp_mask;\n - Pasa gfp_mask a alloc_pages_bulk() y __get_free_page();\n - Aplica la sem\u00e1ntica de GFP_NOFS/NOIO con memalloc_*_save()/restore() alrededor de apply_to_page_range();\n - Actualiza los sitios de llamada del asignador vmalloc.c y percpu en consecuencia."}], "lastModified": "2026-10-30T13:18:11.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE750AA7-BA59-4D1E-960C-5AF11811D9F2", "versionEndExcluding": "6.16.8", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}