CVE-2026-90325 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability in blk-cgroup during IO scheduler switching caused by a race condition in blkcg_activate_policy(), letting attackers cause memory corruption, exploit requires concurrent blkcg deletion.

CVSS base score 7.8 /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
Use After Free
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for blk-cgroup use-after-free.

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

← All CVEs