CVE-2026-98230 Linux Kernel - Use After Free

Linux kernel contains a use-after-free vulnerability caused by improper list deletion in xfrm state_cache and state_cache_input, letting attackers cause memory corruption and potential read/write use-after-free, exploit requires triggering double __xfrm_state_delete calls.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the fix for xfrm state_cache and state_cache_input list deletion.

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