CVE-2025-37909

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Previously skb was\nmapped to EXT descriptor when the number of fragments is zero with\nGSO enabled. Mapping the skb to EXT descriptor prevents it from\nbeing freed, leading to a memory leak"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: lan743x: Se solucion\u00f3 el problema de fuga de memoria con GSO habilitado. Siempre se asigna `skb` al descriptor LS. Anteriormente, skb se asignaba al descriptor EXT cuando el n\u00famero de fragmentos era cero con GSO habilitado. Asignar skb al descriptor EXT impide su liberaci\u00f3n, lo que provoca una fuga de memoria."}], "id": "CVE-2025-37909", "lastModified": "2026-11-10T13:17:44.140", "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": "2025-05-20T16:15:27.390", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/093855ce90177488eac772de4eefbb909033ce5f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: lan743x: Fix memleak issue when GSO enabled", "id": "2367535", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367535"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: lan743x: Fix memleak issue when GSO enabled\nAlways map the `skb` to the LS descriptor. Previously skb was\nmapped to EXT descriptor when the number of fragments is zero with\nGSO enabled. Mapping the skb to EXT descriptor prevents it from\nbeing freed, leading to a memory leak"], "name": "CVE-2025-37909", "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": "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": "2025-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37909\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37909\nhttps://lore.kernel.org/linux-cve-announce/2025052058-CVE-2025-37909-f6da@gregkh/T"], "statement": "Microchip LAN743x driver suffers from a memory leak when GSO is enabled. \nIf a TX frame has zero fragments, the skb was incorrectly mapped to an EXT descriptor instead of the LS descriptor, preventing proper release of memory. Fix ensures that skb is always mapped to the LS descriptor even in the single-fragment case, preventing memory leak during transmission.", "threat_severity": "Low"}

{"created": "2025-06-27T09:26:51.596360+00:00", "updated": "2025-06-27T09:26:51.596410+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}