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CVE-2026-89849

scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path qla2x00_status_entry() filters out non-TYPE_SRB entries and the SRB_NVME_CMD, SRB_BIDI_CMD and SRB_TM_CMD types, then falls through to a SCSI fast path that assumes the command is an SRB_SCSI_CMD. The first thing on that path, qla_chk_edif_rx_sa_delete_pending(), and the subsequent handling both evaluate GET_CMD_SP(sp), i.e. sp->u.scmd.cmd. The srb u union overlays the SCSI command pointer with other command layouts (bsg_job, iocb_cmd). If firmware delivers an unexpected STATUS_TYPE IOCB for a non-SCSI handle, sp->u.scmd.cmd can read as a non-NULL garbage pointer, bypassing the NULL checks in qla_chk_edif_rx_sa_delete_pending() and at the cp == NULL test, and leading to a wild pointer dereference. Reject any SRB whose type is not SRB_SCSI_CMD before entering the fast path. The outstanding_cmds slot is left untouched so a genuinely non-SCSI command still completes through its proper handler.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in 9204fb0888374083be74f799049649a17eab4191; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in b7418198b45b327194b97f856fe8ea8daa91f3fd; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in 8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in e38041b47c29316ba79b645e2ae0b713d216b1db; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in 29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9; From dd30706e73b70d67e88fdaca688db7a3374fd5de · fixed in 0f41d07d72f2245208c45374ca8d0a1846cad667

  • Linux Linux

    5.15

  • KernelLinux

    From 5.15.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5

References 7

git.kernel.org