{"id":"CVE-2026-98323","title":"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","summary":"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 ca…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e3917c85f41ef1df64e27dc0e46ab0d803c5e73e < 2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","Linux >= 308cd50f174c95a507527037f4de1a0396aa4325 < af9f5b474a260ad23ffb9793d716a5e3bbce3b48","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < 262dcd809723723ed8a4e05437ec7e9c21a8f17e","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < eb4d7a946970469b3ab0c762432bf161d5b0836c","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < 8628f8ebf41669302513fb3f0bf0eba38b226742","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < b72dcfb9bf1f0f0147cda03dc59e4002a315067f","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d","Linux >= 754209850df8367c954ac1de7671c7430b1f342c < 9ff797e516dbc1ecb73701ec4c24055712d44411","Linux e09caa38e10bcf027100cc22b0e3cc745a39ef0a","Linux 0c14f795a9eab9344230f9933798b8ee496f497d","Linux 7fada7c6962219b6fc4ff4e62e46a936af110dd9","Linux >= 5.10.150 < 5.10.271","Linux >= 5.15.75 < 5.15.222","Linux >= 5.4.220 < 5.5","Linux >= 5.19.17 < 5.20","Linux >= 6.0.3 < 6.1","Linux 6.1"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:24.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98323","references":[{"url":"https://git.kernel.org/stable/c/262dcd809723723ed8a4e05437ec7e9c21a8f17e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8628f8ebf41669302513fb3f0bf0eba38b226742","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9ff797e516dbc1ecb73701ec4c24055712d44411","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/af9f5b474a260ad23ffb9793d716a5e3bbce3b48","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b72dcfb9bf1f0f0147cda03dc59e4002a315067f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eb4d7a946970469b3ab0c762432bf161d5b0836c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.407Z","slug":"CVE-2026-98323","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}