CVE-2025-39910

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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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "versions": [{"version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "c136f2e4f2edd58a62a3425d4dd373d82834d1f9", "status": "affected", "versionType": "git"}, {"version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "9598c83a50a5f9d57fd0c12fc08d9425c1ce9537", "status": "affected", "versionType": "git"}, {"version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "aa1b4b7a1b92743297f9da741424df4703a8e11b", "status": "affected", "versionType": "git"}, {"version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "33b95d90427cb4babf32059e323a6d0c027610fe", "status": "affected", "versionType": "git"}, {"version": "451769ebb7e792c3404db53b3c2a422990de654e", "lessThan": "79357cd06d41d0f5a11b17d7c86176e395d10ef2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.8", "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": "5.17", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.16.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c136f2e4f2edd58a62a3425d4dd373d82834d1f9"}, {"url": "https://git.kernel.org/stable/c/9598c83a50a5f9d57fd0c12fc08d9425c1ce9537"}, {"url": "https://git.kernel.org/stable/c/aa1b4b7a1b92743297f9da741424df4703a8e11b"}, {"url": "https://git.kernel.org/stable/c/33b95d90427cb4babf32059e323a6d0c027610fe"}, {"url": "https://git.kernel.org/stable/c/79357cd06d41d0f5a11b17d7c86176e395d10ef2"}], "title": "mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"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"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-39910", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T17:42:43.252504Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T17:42:47.091Z"}}]}}

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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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.191", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.114", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16.8", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.17", "versionStartIncluding": "5.17"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:22:36.341Z"}}}, "cveMetadata": {"cveId": "CVE-2025-39910", "state": "PUBLISHED", "dateUpdated": "2026-10-30T12:22:36.341Z", "dateReserved": "2025-04-16T07:20:57.147Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-10-01T07:44:33.759Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c136f2e4f2edd58a62a3425d4dd373d82834d1f9", "status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "versionType": "git"}, {"lessThan": "9598c83a50a5f9d57fd0c12fc08d9425c1ce9537", "status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "versionType": "git"}, {"lessThan": "aa1b4b7a1b92743297f9da741424df4703a8e11b", "status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "versionType": "git"}, {"lessThan": "33b95d90427cb4babf32059e323a6d0c027610fe", "status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "versionType": "git"}, {"lessThan": "79357cd06d41d0f5a11b17d7c86176e395d10ef2", "status": "affected", "version": "451769ebb7e792c3404db53b3c2a422990de654e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["include/linux/kasan.h", "mm/kasan/shadow.c", "mm/vmalloc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.8", "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": "DE750AA7-BA59-4D1E-960C-5AF11811D9F2", "versionEndExcluding": "6.16.8", "versionStartIncluding": "5.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*", "matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2025-39910", "lastModified": "2026-10-30T13:18:11.187", "metrics": {"cvssMetricV31": [{"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"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39910", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T17:42:43.252504Z", "version": "2.0.3"}}]}, "published": "2025-10-01T08:15:33.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/33b95d90427cb4babf32059e323a6d0c027610fe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/79357cd06d41d0f5a11b17d7c86176e395d10ef2"}, {"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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-667"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: mm/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()", "id": "2400592", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400592"}, "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/vmalloc, mm/kasan: respect gfp mask in kasan_populate_vmalloc()\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.\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.\nxfs calls vmalloc with GFP_NOFS, so this bug could lead to deadlock.\nThere was a report here\nhttps://lkml.kernel.org/r/686ea951.050a0220.385921.0016.GAE@google.com\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()\naround apply_to_page_range();\n- Updates vmalloc.c and percpu allocator call sites accordingly."], "name": "CVE-2025-39910", "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39910\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39910\nhttps://lore.kernel.org/linux-cve-announce/2025100110-CVE-2025-39910-568a@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-02T08:40:10.746992+00:00", "updated": "2025-10-02T08:40:10.747053+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}