Threats Tagged 'ubuntu-cve-2026-23394'
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Threats Tagged 'ubuntu-cve-2026-23394'
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A vulnerability in the Linux kernel's af_unix subsystem involving garbage collection (GC) and the MSG_PEEK socket flag was resolved. The issue arises from a race condition where GC incorrectly purges the receive queue of a live socket due to MSG_PEEK increasing a file descriptor's reference count without proper synchronization. This can cause the GC to mistakenly consider sockets dead and collect them prematurely. The fix introduces a memory barrier and notification mechanism to detect this race and defer garbage collection, avoiding the need for heavy locking. The vulnerability has a medium severity score of 4.7 and affects specific Linux kernel versions prior to 6.8.0-1057.60~22.04.1 and related builds. A patch is available and should be applied to mitigate the issue. Join the discussion | GCVE Database | 03/25/2026, 11:16:00 UTC Added: 06/29/2026, 22:11:29 UTC |
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