{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-39910", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.147Z", "datePublished": "2025-10-01T07:44:33.759Z", "dateUpdated": "2025-10-01T07:44:33.759Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-10-01T07:44:33.759Z"}, "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."}], "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": "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": "6.16.8", "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": "6.16.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/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"}}}}

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{"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"]}