{"cve":"CVE-2026-31518","nvd":{"published":"2026-04-22T14:16:51.410","modified":"2026-10-15T02:19:09.963","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nesp: fix skb leak with espintcp and async crypto\n\nWhen the TX queue for espintcp is full, esp_output_tail_tcp will\nreturn an error and not free the skb, because with synchronous crypto,\nthe common xfrm output code will drop the packet for us.\n\nWith async crypto (esp_output_done), we need to drop the skb when\nesp_output_tail_tcp returns an error.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2","https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcd","https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9","https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4","https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-31518","score":0.00129,"percentile":0.02494,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}