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Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVE-2025-32793

Medium
4/10

Summary

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.13.0-rc0 through 1.15.15, 1.16.0-pre.0 through 1.16.8, 1.17.0-pre.0 through 1.17.2 and 1.18.0-pre.0, are vulnerable when using Wireguard transparent encryption in a Cilium cluster, packets that originate from a terminating endpoint can leave the source node without encryption due to a race condition in how traffic is processed by Cilium.

  • HIGH
  • NETWORK
  • NONE
  • CHANGED
  • NONE
  • NONE
  • LOW
  • NONE

CWE-362 - Race Condition

A race condition occurs in a shared memory program when two threads/processes access the same shared memory data, and at least one thread executes a write operation. This vulnerability manipulates the time to check vs. time to use (TOC/TOU) gap between the threads in the critical section to cause disorientation in the shared data. The impact can vary from compromising the confidentiality of the system to causing the system to crash or to execute arbitrary code.

References

Advisory Timeline

  • Published