{"id":"CVE-2026-99154","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-99154","generatedAt":"2026-11-04T11:42:40.519Z","title":"In the Linux kernel, the following vulnerability has been resolved: scsi: libiscsi: Reject a negative task index from parse_pdu_itt A transport that implements parse_pdu_itt hands libiscsi an index taken from the PDU, and both lookups bound it from…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Reject a negative task index from parse_pdu_itt\n\nA transport that implements parse_pdu_itt hands libiscsi an index taken\nfrom the PDU, and both lookups bound it from above only:\n\n      if (i >= session->cmds_max)\n\ni and cmds_max are both int, so a negative index passes and\nsession->cmds[i] is read from before the array.\n\nbe2iscsi produces one. beiscsi_parse_pdu() assigns the raw tag,\n\n      *index = (int)itt;\n\nand beiscsi_complete_pdu() forwards an unsolicited NOP-In from the\nhardware async ring without replacing its ITT, so the value is the\ntarget's. It also reports the session's own age rather than the one in\nthe tag, which leaves the age comparison in iscsi_verify_itt() with\nnothing to reject.\n\nBound the index from below in both lookups.","published":"2026-10-28T11:17:36.000Z","lastModified":"2026-10-31T13:17:58.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":[],"epss":{"score":0.00514,"percentile":0.43873,"date":"2026-11-03","history":[{"date":"2026-10-29","score":0.00172,"percentile":0.06617}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-31T14:45:07.000Z","detail":{"from":null,"score":"9.8","severity":"CRITICAL","fromSeverity":null},"summary":"Now scored CVSS 9.8 CRITICAL."},{"kind":"new","label":"New CVE","at":"2026-10-28T11:17:36.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-28T11:17:35.577Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://git.kernel.org/stable/c/0eb06ebbbecb122f0df9a1f7f623f5255be741ed","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/24bd9ba431b2daa263f3551bc2f09f6b4487f5ae","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/35b60549a956237488c89a2d85352e026e7d55b7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6200fb2de579f268742a77b0f3d823cb0a8b1947","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6cadfa6f1f5896632d4223d3b7addb2a29fea74e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ee2a09a1dbb257c9e828ad2497f8e4832dfb142","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e896a97f336c5edfc13066b57ed431cb3f64e68c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f8fabe1fe044f86abc42194b8f86dfd70212115f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99154","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}