{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39795", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.132Z", "datePublished": "2025-09-12T15:59:32.037Z", "dateUpdated": "2026-01-02T15:32:23.368Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-01-02T15:32:23.368Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: avoid possible overflow for chunk_sectors check in blk_stack_limits()\n\nIn blk_stack_limits(), we check that the t->chunk_sectors value is a\nmultiple of the t->physical_block_size value.\n\nHowever, by finding the chunk_sectors value in bytes, we may overflow\nthe unsigned int which holds chunk_sectors, so change the check to be\nbased on sectors."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-settings.c"], "versions": [{"version": "22ada802ede89829dd010a317d9b812b7df7111a", "lessThan": "418751910044649baa2b424ea31cce3fc4dcc253", "status": "affected", "versionType": "git"}, {"version": "22ada802ede89829dd010a317d9b812b7df7111a", "lessThan": "8b3ce085b52e674290cbfdd07034e7653ffbe4dc", "status": "affected", "versionType": "git"}, {"version": "22ada802ede89829dd010a317d9b812b7df7111a", "lessThan": "31f2f080898e50cbf2bae62d35f9f2a997547b38", "status": "affected", "versionType": "git"}, {"version": "22ada802ede89829dd010a317d9b812b7df7111a", "lessThan": "3b9d69f0e68aa6b0acd9791c45d445154a8c66e9", "status": "affected", "versionType": "git"}, {"version": "22ada802ede89829dd010a317d9b812b7df7111a", "lessThan": "46aa80ef49594ed7de685ecbc673b291e9a2c159", "status": "affected", "versionType": "git"}, {"version": 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{"version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.2", "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": "5.10", "versionEndExcluding": "5.10.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.190"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.149"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12.43"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253"}, {"url": "https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc"}, {"url": "https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38"}, {"url": "https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9"}, {"url": "https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159"}, {"url": "https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2"}, {"url": "https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f"}, {"url": "https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8"}], "title": "block: avoid possible overflow for chunk_sectors check in blk_stack_limits()", "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": "2025-11-03T17:43:27.990Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: avoid possible overflow for chunk_sectors check in blk_stack_limits()\n\nIn blk_stack_limits(), we check that the t->chunk_sectors value is a\nmultiple of the t->physical_block_size value.\n\nHowever, by finding the chunk_sectors value in bytes, we may overflow\nthe unsigned int which holds chunk_sectors, so change the check to be\nbased on sectors."}], "id": "CVE-2025-39795", "lastModified": "2025-11-03T18:16:47.633", "metrics": {}, "published": "2025-09-12T16:15:33.850", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: block: avoid possible overflow for chunk_sectors check in blk_stack_limits()", "id": "2400059", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400059"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblock: avoid possible overflow for chunk_sectors check in blk_stack_limits()\nIn blk_stack_limits(), we check that the t->chunk_sectors value is a\nmultiple of the t->physical_block_size value.\nHowever, by finding the chunk_sectors value in bytes, we may overflow\nthe unsigned int which holds chunk_sectors, so change the check to be\nbased on sectors."], "name": "CVE-2025-39795", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2025-09-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39795\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39795\nhttps://lore.kernel.org/linux-cve-announce/2025091223-CVE-2025-39795-c418@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-15T10:43:47.433179+00:00", "updated": "2025-09-15T10:43:47.433228+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}