CVE-2026-89705 Linux Kernel - Broken Access Control

Linux kernel contains a broken access control vulnerability in nfsd_dispatch() caused by improper restoration of rq_status_counter on all exit paths, letting attackers cause data races and inconsistent state exposure, exploit requires kernel-level access.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for rq_status_counter restoration.

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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