{"id":"CVE-2026-74559","revision":"4fcc81f52fca43b4985c13432efb06b6","records":[{"revision":"4fcc81f52fca43b4985c13432efb06b6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74559","aliases":[],"title":"xsk: drain continuation descs after overflow in xsk_build_skb()","description":"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.","state":0,"publishedAt":"2026-08-15T12:28:03.279+00:00","modifiedAt":"2026-10-21T12:45:57.288+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/xdp_sock.h\",\n                        \"net/xdp/xsk.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"cf24f5a5feeaae34c1a34d1e04f8ac697290427a\",\n                            \"lessThan\": \"ecd0d1cde0478c232a867f14ec99cf97aff5eb30\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf24f5a5feeaae34c1a34d1e04f8ac697290427a\",\n                            \"lessThan\": \"ceb00cb87a22c42d20c39336213db2b843ca9e34\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf24f5a5feeaae34c1a34d1e04f8ac697290427a\",\n                            \"lessThan\": \"5e94d74e4f3baebaa083288f33b4be7ce0a34982\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cf24f5a5feeaae34c1a34d1e04f8ac697290427a\",\n                            \"lessThan\": \"bd44a6dcd4248883de90f5dad53ae80066e27096\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/xdp_sock.h\",\n                        \"net/xdp/xsk.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ecd0d1cde0478c232a867f14ec99cf97aff5eb30","https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34","https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982","https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74559","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74559","identifiers":["CVE-2026-74559"]},"retained":false,"historicalAffected":[]}],"coverage":[]}