{"id":"CVE-2026-80588","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: reclaim forward-allocated memory on RX path errors\n\nAfter commit 9db5b3cec4ec (\"mptcp: borrow forward memory from subflow\"),\nerrors in the receive path prior to …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: reclaim forward-allocated memory on RX path errors\n\nAfter commit 9db5b3cec4ec (\"mptcp: borrow forward memory from subflow\"),\nerrors in the receive path prior to …","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= a84164847b1e0a106ebc46821e5d2f9b775c9dc8 < 473f1a5ab2abc98dd9e74b95b9c23c66c47535cc","Linux >= 9db5b3cec4ec1c0cd3239689f5c8653d691a1754 < 8277f48a06d3aa1441f6d0b6998ccc0360d30ed8","Linux >= 9db5b3cec4ec1c0cd3239689f5c8653d691a1754 < 41b49a8b914ec7dcb03eae93fb27f3c464078644","Linux >= 6.18.35 < 6.18.46","Linux 6.19"],"published":"2026-08-26","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:18:02.090","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80588","references":[{"url":"https://git.kernel.org/stable/c/41b49a8b914ec7dcb03eae93fb27f3c464078644","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/473f1a5ab2abc98dd9e74b95b9c23c66c47535cc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8277f48a06d3aa1441f6d0b6998ccc0360d30ed8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00609,"epssPercentile":0.48948,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T19:18:06.349693Z"},"ingestedAt":"2026-10-16T19:46:24.311Z","slug":"CVE-2026-80588","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: reclaim forward-allocated memory on RX path errors\n\nAfter commit 9db5b3cec4ec (\"mptcp: borrow forward memory from subflow\"),\nerrors in the receive path prior to queueing skbs into the receive\nqueue do not trigger forward-allocated memory reclaiming.\n\nPrevent forward memory from growing unboundedly in pathological drop\nscenarios by explicitly reclaiming memory when skbs are dropped.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}