{"id":"CVE-2026-74559","summary":"xsk: drain continuation descs after overflow in xsk_build_skb()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: drain continuation descs after overflow in xsk_build_skb()\n\nFix generic xmit path multi-buffer logic when packets are either too big\n(count of descriptors exceed MAX_SKB_FRAGS) or an invalid descriptor is\nincluded in fragmented packet. Introduce xdp_sock::drain_cont and act\nupon this flag - when it is set, keep on consuming descriptors from\nAF_XDP Tx ring and put them directly onto Cq. Previously these\ndescriptors were silently lost and could never be reached again.","modified":"2026-08-18T03:30:57.982651621Z","published":"2026-08-15T12:28:03.279Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74559.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74559.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74559"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"cf24f5a5feeaae34c1a34d1e04f8ac697290427a"},{"fixed":"ceb00cb87a22c42d20c39336213db2b843ca9e34"},{"fixed":"5e94d74e4f3baebaa083288f33b4be7ce0a34982"},{"fixed":"bd44a6dcd4248883de90f5dad53ae80066e27096"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74559.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74559.json"}}],"schema_version":"1.9.0"}