{"id":"CVE-2026-98323","revision":"ca4a855074d9455397c437f9ac0a6dab","records":[{"revision":"ca4a855074d9455397c437f9ac0a6dab","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98323","aliases":[],"title":"RDMA/siw: Bound fragmented header copies by the remaining length","description":"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.","state":0,"publishedAt":"2026-10-06T08:46:17.15+00:00","modifiedAt":"2026-10-19T09:17:33.779+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                        \"drivers/infiniband/sw/siw/siw_qp_rx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e3917c85f41ef1df64e27dc0e46ab0d803c5e73e\",\n                            \"lessThan\": \"2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"308cd50f174c95a507527037f4de1a0396aa4325\",\n                            \"lessThan\": \"af9f5b474a260ad23ffb9793d716a5e3bbce3b48\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"262dcd809723723ed8a4e05437ec7e9c21a8f17e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"eb4d7a946970469b3ab0c762432bf161d5b0836c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"8628f8ebf41669302513fb3f0bf0eba38b226742\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"b72dcfb9bf1f0f0147cda03dc59e4002a315067f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"754209850df8367c954ac1de7671c7430b1f342c\",\n                            \"lessThan\": \"9ff797e516dbc1ecb73701ec4c24055712d44411\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e09caa38e10bcf027100cc22b0e3cc745a39ef0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0c14f795a9eab9344230f9933798b8ee496f497d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7fada7c6962219b6fc4ff4e62e46a936af110dd9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.150\",\n                            \"lessThan\": \"5.10.271\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.75\",\n                            \"lessThan\": \"5.15.222\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.220\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.19.17\",\n                            \"lessThan\": \"5.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.0.3\",\n                            \"lessThan\": \"6.1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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                        \"drivers/infiniband/sw/siw/siw_qp_rx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","https://git.kernel.org/stable/c/af9f5b474a260ad23ffb9793d716a5e3bbce3b48","https://git.kernel.org/stable/c/262dcd809723723ed8a4e05437ec7e9c21a8f17e","https://git.kernel.org/stable/c/eb4d7a946970469b3ab0c762432bf161d5b0836c","https://git.kernel.org/stable/c/8628f8ebf41669302513fb3f0bf0eba38b226742","https://git.kernel.org/stable/c/b72dcfb9bf1f0f0147cda03dc59e4002a315067f","https://git.kernel.org/stable/c/e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d","https://git.kernel.org/stable/c/9ff797e516dbc1ecb73701ec4c24055712d44411"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98323","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98323","identifiers":["CVE-2026-98323"]},"retained":false,"historicalAffected":[]}],"coverage":[]}