CVE-2026-64093
kernel: batman-adv: tp_meter: directly shut down timer on cleanup
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Severity
ModerateRed Hat Product Security
CVSS
Review impact separately from score.
Published · July 19, 2026
Updated · October 20, 2026
Description
A flaw was found in the batman-adv component of the Linux kernel. A race condition exists where a timer can be re-armed after its associated reference has been removed during cleanup. This can occur when batadv_tp_sender_cleanup() attempts to shut down a timer, but a separate execution context re-arms it before it is fully disarmed. An attacker could potentially exploit this to cause a use-after-free, leading to a denial of service.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CWE-364 · Signal Handler Race Condition