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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C5CC21AE-713E-4404-8968-EE1EBC95B996", "versionEndExcluding": "6.1.129", "versionStartIncluding": "2.6.38", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0C58261F-EDFB-4A12-8CCD-F12101482030", "versionEndExcluding": "6.6.78", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "033BB7EE-C9A2-45EA-BAC9-87BB9D951BCD", "versionEndExcluding": "6.12.14", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0E92CEE3-1FC3-4AFC-A513-DEDBA7414F00", "versionEndExcluding": "6.13.3", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix possible int overflows in nilfs_fiemap()\n\nSince nilfs_bmap_lookup_contig() in nilfs_fiemap() calculates its result\nby being prepared to go through potentially maxblocks == INT_MAX blocks,\nthe value in n may experience an overflow caused by left shift of blkbits.\n\nWhile it is extremely unlikely to occur, play it safe and cast right hand\nexpression to wider type to mitigate the issue.\n\nFound by Linux Verification Center (linuxtesting.org) with static analysis\ntool SVACE."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrigen posibles desbordamientos de int en nilfs_fiemap() Dado que nilfs_bmap_lookup_contig() en nilfs_fiemap() calcula su resultado al estar preparado para pasar por bloques potencialmente maxblocks == INT_MAX, el valor en n puede experimentar un desbordamiento causado por el desplazamiento a la izquierda de blkbits. Si bien es extremadamente improbable que ocurra, no corra riesgos y convierta la expresi\u00f3n de la mano derecha a un tipo m\u00e1s amplio para mitigar el problema. Encontrado por Linux Verification Center (linuxtesting.org) con la herramienta de an\u00e1lisis est\u00e1tico SVACE."}], "id": "CVE-2025-21736", "lastModified": "2025-11-03T20:17:13.623", "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"}]}, "published": "2025-02-27T03:15:14.230", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58b1c6881081f5ddfb9a14dc241a74732c0f855c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7649937987fed51ed09985da4019d50189fc534e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f41df5fd4c11d26e929a85f7239799641f92da7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nilfs2: fix possible int overflows in nilfs_fiemap()", "id": "2348524", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348524"}, "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"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: fix possible int overflows in nilfs_fiemap()\nSince nilfs_bmap_lookup_contig() in nilfs_fiemap() calculates its result\nby being prepared to go through potentially maxblocks == INT_MAX blocks,\nthe value in n may experience an overflow caused by left shift of blkbits.\nWhile it is extremely unlikely to occur, play it safe and cast right hand\nexpression to wider type to mitigate the issue.\nFound by Linux Verification Center (linuxtesting.org) with static analysis\ntool SVACE."], "name": "CVE-2025-21736", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21736\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21736\nhttps://lore.kernel.org/linux-cve-announce/2025022659-CVE-2025-21736-6d94@gregkh/T"], "threat_severity": "Low"}

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