{"id":"CVE-2026-98323","published":"2026-10-06T09:18:24Z","modified":"2026-10-19T10:18:34Z","title":"In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Bound fragmented header copies by the…","vendor":"Linux","product":"Linux","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":null,"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00514,"percentile":0.438,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":10,"pulses":[{"name":"SUSE Ships Another Kernel Update Closing Twenty Seven New Linux Flaws","url":"https://otx.alienvault.com/pulse/6ae3e9d1d7a5bcf3391c4cee","created":"2026-10-30"},{"name":"Known_Cve | Oct 15, 2026 | Part 1/3","url":"https://otx.alienvault.com/pulse/6acf98726e4260f2f2ba3d49","created":"2026-10-14"},{"name":"Known_Cve | Oct 14, 2026 | Part 1/3","url":"https://otx.alienvault.com/pulse/6ace466c18a71dd7afa3f788","created":"2026-10-13"},{"name":"Known_Cve | Oct 13, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6accf723f346ce4b8a50d55a","created":"2026-10-12"},{"name":"Known_Cve | Oct 12, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6acba8a68a86c4d9508005a7","created":"2026-10-11"},{"name":"Known_Cve | Oct 11, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6aca554665c47eb24716f8f2","created":"2026-10-10"},{"name":"Known_Cve | Oct 10, 2026 | Part 1/2","url":"https://otx.alienvault.com/pulse/6ac903591ff588ac9423f235","created":"2026-10-09"},{"name":"Known_Cve | Oct 9, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac7b1a3f215e7af4290dc2e","created":"2026-10-08"},{"name":"Known_Cve | Oct 8, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac65e5b607642608f852c9a","created":"2026-10-07"},{"name":"Known_Cve | Oct 7, 2026 | Part 2/2","url":"https://otx.alienvault.com/pulse/6ac50f851d74c73e484f44c6","created":"2026-10-06"}],"provenance":"machine"},"cwes":[],"references":[{"url":"https://git.kernel.org/stable/c/262dcd809723723ed8a4e05437ec7e9c21a8f17e","tags":[]},{"url":"https://git.kernel.org/stable/c/2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7","tags":[]},{"url":"https://git.kernel.org/stable/c/8628f8ebf41669302513fb3f0bf0eba38b226742","tags":[]},{"url":"https://git.kernel.org/stable/c/9ff797e516dbc1ecb73701ec4c24055712d44411","tags":[]},{"url":"https://git.kernel.org/stable/c/af9f5b474a260ad23ffb9793d716a5e3bbce3b48","tags":[]},{"url":"https://git.kernel.org/stable/c/b72dcfb9bf1f0f0147cda03dc59e4002a315067f","tags":[]},{"url":"https://git.kernel.org/stable/c/e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d","tags":[]},{"url":"https://git.kernel.org/stable/c/eb4d7a946970469b3ab0c762432bf161d5b0836c","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-93308","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93308","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-06","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98323","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":18.0,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":8.76,"detail":"percentile 0.4380"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":2.36,"detail":"10 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}