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CVE Watch31 oct 2026

CVE-2026-99154

In the Linux kernel, the following vulnerability has been resolved: scsi: libiscsi: Reject a negative task index from parse_pdu_itt A tran

CVSS

9.8

Crítico

EPSS

0.5%

p44

KEV

—

Exploit Today

13

0-100

Publicado: 28 oct 2026 · Última mod.: 31 oct 2026

EPSS · 30d
0.2%EPSS · 30 días0.5%
2026-10-292026-11-07
Descripción técnica

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 above only: if (i >= session->cmds_max) i and cmds_max are both int, so a negative index passes and session->cmds[i] is read from before the array. be2iscsi produces one. beiscsi_parse_pdu() assigns the raw tag, *index = (int)itt; and beiscsi_complete_pdu() forwards an unsolicited NOP-In from the hardware async ring without replacing its ITT, so the value is the target's. It also reports the session's own age rather than the one in the tag, which leaves the age comparison in iscsi_verify_itt() with nothing to reject. Bound the index from below in both lookups.

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