{"id":"CVE-2025-37909","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Fix memleak issue when GSO enabled\n\nAlways map the `skb` to the LS descriptor","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Fix memleak issue when GSO enabled\n\nAlways map the `skb` to the LS descriptor. Previously skb was\nmapped to EXT descriptor when the number of fragments is…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-401"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.17, < 5.4.294","linux_kernel >= 5.5, < 5.10.238","linux_kernel >= 5.11, < 5.15.182","linux_kernel >= 5.16, < 6.1.138","linux_kernel >= 6.2, < 6.6.90","linux_kernel >= 6.7, < 6.12.28","linux_kernel >= 6.13, < 6.14.6","linux_kernel = 6.15","debian_linux = 11.0"],"patched":["linux_kernel 6.14.6"],"published":"2025-05-20","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:17:48.983","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-37909","references":[{"url":"https://git.kernel.org/stable/c/093855ce90177488eac772de4eefbb909033ce5f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.0023,"epssPercentile":0.13809,"ingestedAt":"2026-09-08T15:33:26.997Z","slug":"CVE-2025-37909","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Fix memleak issue when GSO enabled\n\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\n\n## Affected\n\n- `linux_kernel >= 4.17, < 5.4.294`\n- `linux_kernel >= 5.5, < 5.10.238`\n- `linux_kernel >= 5.11, < 5.15.182`\n- `linux_kernel >= 5.16, < 6.1.138`\n- `linux_kernel >= 6.2, < 6.6.90`\n- `linux_kernel >= 6.7, < 6.12.28`\n- `linux_kernel >= 6.13, < 6.14.6`\n- `linux_kernel = 6.15`\n- `debian_linux = 11.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.14.6`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221511,"id":"CVE-2025-37909","ts":1792035246376,"field":"cvss","old":null,"new":"5.5"},{"seq":221510,"id":"CVE-2025-37909","ts":1792035246376,"field":"severity","old":"none","new":"medium"}]}