{"api_version":"1","generated_at":"2026-08-17T11:25:33+00:00","cve":"CVE-2026-74559","urls":{"html":"https://cve.report/CVE-2026-74559","api":"https://cve.report/api/cve/CVE-2026-74559.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74559","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74559"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:18:01","updated_at":"2026-08-17 06:19:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982","name":"https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34","name":"https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096","name":"https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74559","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74559","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf24f5a5feeaae34c1a34d1e04f8ac697290427a ceb00cb87a22c42d20c39336213db2b843ca9e34 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf24f5a5feeaae34c1a34d1e04f8ac697290427a 5e94d74e4f3baebaa083288f33b4be7ce0a34982 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cf24f5a5feeaae34c1a34d1e04f8ac697290427a bd44a6dcd4248883de90f5dad53ae80066e27096 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"74559","cve":"CVE-2026-74559","epss":"0.001660000","percentile":"0.062830000","score_date":"2026-08-16","updated_at":"2026-08-17 00:01:04"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/xdp_sock.h","net/xdp/xsk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ceb00cb87a22c42d20c39336213db2b843ca9e34","status":"affected","version":"cf24f5a5feeaae34c1a34d1e04f8ac697290427a","versionType":"git"},{"lessThan":"5e94d74e4f3baebaa083288f33b4be7ce0a34982","status":"affected","version":"cf24f5a5feeaae34c1a34d1e04f8ac697290427a","versionType":"git"},{"lessThan":"bd44a6dcd4248883de90f5dad53ae80066e27096","status":"affected","version":"cf24f5a5feeaae34c1a34d1e04f8ac697290427a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/xdp_sock.h","net/xdp/xsk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:21:46.240Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34"},{"url":"https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982"},{"url":"https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096"}],"title":"xsk: drain continuation descs after overflow in xsk_build_skb()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74559","datePublished":"2026-08-15T12:28:03.279Z","dateReserved":"2026-08-15T05:44:03.916Z","dateUpdated":"2026-08-17T05:21:46.240Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:18:01","lastModifiedDate":"2026-08-17 06:19:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74559","Ordinal":"1","Title":"xsk: drain continuation descs after overflow in xsk_build_skb()","CVE":"CVE-2026-74559","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74559","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"xsk: drain continuation descs after overflow in xsk_build_skb()"}]}}}