{"schema":"threatline.record/2","record":{"id":"CVE-2026-97618","aliases":[],"summary":"io_uring/net: don't overconsume buffers when using MSG_TRUNC","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: don't overconsume buffers when using MSG_TRUNC\n\nWhen a recv/recvmsg is issued with MSG_TRUNC and the incoming packet is\nlarger than the provided buffer, the net layer returns the full length\nof the packet rather than the number of bytes actually copied into the\nbuffer.  As a result, io_uring advances more of the provided buffer ring\nthan was actually filled.  Use the actual filled region size to consume\nthe buffer, but still return the full size to preserve MSG_TRUNC\nsemantics.\n\nTake care with multishot, because that seems to already truncate the\nconsumption based on the available payload size.\n\nThis was reported in https://github.com/axboe/liburing/issues/1619.\n\n[axboe: fold in size_t unsigned fix]","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"ae98dbf43d755b4e111fcd086e53939bef3e9a1a","lessThan":"41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1","status":"affected","versionType":"git"},{"version":"ae98dbf43d755b4e111fcd086e53939bef3e9a1a","lessThan":"927d96f91c582b319d104ecf50ec935a8dc29193","status":"affected","versionType":"git"},{"version":"ae98dbf43d755b4e111fcd086e53939bef3e9a1a","lessThan":"2e70ea75c7bb38a6dc212975f887310f14f7c043","status":"affected","versionType":"git"},{"version":"ae98dbf43d755b4e111fcd086e53939bef3e9a1a","lessThan":"6028b543884f8735e057ec9eea4908cd61cab230","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"927d96f91c582b319d104ecf50ec935a8dc29193","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2e70ea75c7bb38a6dc212975f887310f14f7c043","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","source_modified_at":"2026-10-19T09:10:21.782Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6028b543884f8735e057ec9eea4908cd61cab230","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09312,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:22:25.049Z","modified_at":"2026-10-19T09:10:21.782Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97618","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:10:21.782Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97618","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/927d96f91c582b319d104ecf50ec935a8dc29193"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2e70ea75c7bb38a6dc212975f887310f14f7c043"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6028b543884f8735e057ec9eea4908cd61cab230"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:10:21.782Z","content_hash":"230fcfb8fbd979a60294e42697a8e4e007023cef768f2857e8c7d892d515fe75"}}