CVE-2026-89970 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in nvmet-auth caused by asynchronous cancellation of delayed work during submission queue teardown, letting attackers cause memory corruption or system instability, exploit requires access to NVMe target queues.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.80% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Remote Code Execution
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.

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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