{"schema":"threatline.record/2","record":{"id":"CVE-2026-98323","aliases":[],"summary":"RDMA/siw: Bound fragmented header copies by the remaining length","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Bound fragmented header copies by the remaining length\n\nsiw_get_hdr() can receive an extended DDP/RDMAP header across more than\none TCP callback. The first callback may receive most of the header,\nwhile the next one still limits the copy to hdrlen - MIN_DDP_HDR instead\nof the number of missing bytes. This makes the destination move past the\nend of the header and overwrite the receive state, including\nfpdu_part_rcvd. A later callback can then use a negative fpdu_part_rcvd\nvalue as a copy offset, which creates an OOB write.\n\nUse the number of header bytes already received when calculating the\nnext copy length.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"e3917c85f41ef1df64e27dc0e46ab0d803c5e73e","lessThan":"2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","status":"affected","versionType":"git"},{"version":"308cd50f174c95a507527037f4de1a0396aa4325","lessThan":"af9f5b474a260ad23ffb9793d716a5e3bbce3b48","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"262dcd809723723ed8a4e05437ec7e9c21a8f17e","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"eb4d7a946970469b3ab0c762432bf161d5b0836c","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"8628f8ebf41669302513fb3f0bf0eba38b226742","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"b72dcfb9bf1f0f0147cda03dc59e4002a315067f","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d","status":"affected","versionType":"git"},{"version":"754209850df8367c954ac1de7671c7430b1f342c","lessThan":"9ff797e516dbc1ecb73701ec4c24055712d44411","status":"affected","versionType":"git"},{"version":"e09caa38e10bcf027100cc22b0e3cc745a39ef0a","status":"affected","versionType":"git"},{"version":"0c14f795a9eab9344230f9933798b8ee496f497d","status":"affected","versionType":"git"},{"version":"7fada7c6962219b6fc4ff4e62e46a936af110dd9","status":"affected","versionType":"git"},{"version":"5.10.150","lessThan":"5.10.271","status":"affected","versionType":"semver"},{"version":"5.15.75","lessThan":"5.15.222","status":"affected","versionType":"semver"},{"version":"5.4.220","lessThan":"5.5","status":"affected","versionType":"semver"},{"version":"5.19.17","lessThan":"5.20","status":"affected","versionType":"semver"},{"version":"6.0.3","lessThan":"6.1","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.1","status":"affected"},{"version":"0","lessThan":"6.1","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","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-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"262dcd809723723ed8a4e05437ec7e9c21a8f17e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8628f8ebf41669302513fb3f0bf0eba38b226742","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9ff797e516dbc1ecb73701ec4c24055712d44411","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.10.271","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","source_modified_at":"2026-10-19T09:17:33.779Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.15.222","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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record"}],"cvss":9.8,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00559,"percentile":0.45811,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:46:17.150Z","modified_at":"2026-10-19T09:17:33.779Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98323","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:17:33.779Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98323","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/2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/af9f5b474a260ad23ffb9793d716a5e3bbce3b48"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/262dcd809723723ed8a4e05437ec7e9c21a8f17e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/eb4d7a946970469b3ab0c762432bf161d5b0836c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8628f8ebf41669302513fb3f0bf0eba38b226742"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b72dcfb9bf1f0f0147cda03dc59e4002a315067f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9ff797e516dbc1ecb73701ec4c24055712d44411"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:17:33.779Z","content_hash":"a23b89ef8908540d7388732f512ba87cc5c158450fdb332bcf4430a8b5305e0f"}}