CVE-2026-64093
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.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Modify Application Data; Modify Memory; DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands
It may be possible to cause data corruption and possibly execute arbitrary code by modifying global variables or data structures at unexpected times, violating the assumptions of code that uses this global data.
Access Control
Technical Impact: Gain Privileges or Assume Identity
If a signal handler interrupts code that is executing with privileges, it may be possible that the signal handler will also be executed with elevated privileges, possibly making subsequent exploits more severe.
Frequently Asked Questions
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