proc interface hang

About this tag
The proc interface hang tag covers discussions about Linux kernel bugs that cause the /proc filesystem to hang or become unresponsive. The primary example is CVE-2026-31642, a vulnerability in the RxRPC networking subsystem where improper list deletion leads to corruption when reading /proc/net/rxrpc/calls. This issue is a kernel concurrency flaw, not a remote code execution bug. Topics include RCU list handling, kernel debugging, and system stability. While the tag is Linux-focused, it may be relevant to Windows users running WSL or virtualized environments where Linux kernel stability affects host performance.

  1. CVE-2026-31642: Linux RxRPC RCU list bug can hang /proc/net/rxrpc/calls

    Quick summary CVE-2026-31642 is a Linux kernel vulnerability in the rxrpc networking subsystem. The issue is not a typical remote-code-execution bug; it is a kernel concurrency/list-handling flaw where an RxRPC call was removed from the global rxnet->calls list with the wrong list primitive. The...
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