CVE-2026-99054 Linux Kernel tipc - Race Condition

Linux kernel tipc contains a race condition caused by improper teardown order of topsrv workqueues and connections, letting attackers trigger use-after-free and denial of service, exploit requires triggering concurrent connection teardown.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Race Condition
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
23 October 2026
Updated
25 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for tipc topsrv workqueue teardown.

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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