CVE-2026-89847 Linux Kernel qla2xxx - Use After Free

Linux kernel contains a use-after-free vulnerability in the qla2xxx SCSI driver caused by double completion in async IOCB timeout handling, letting attackers cause memory corruption, exploit requires triggering async IOCB timeout.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.68% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for async IOCB timeout handling.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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