CVE-2024-50294

rxrpc: Fix missing locking causing hanging calls

State: Published
Severity: 7.8 High
Published: Nov 19, 2024
Updated: Aug 5, 2026
Reserved: Oct 21, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix missing locking causing hanging calls

If a call gets aborted (e.g. because kafs saw a signal) between it being queued for connection and the I/O thread picking up the call, the abort will be prioritised over the connection and it will be removed from local->new_client_calls by rxrpc_disconnect_client_call() without a lock being held. This may cause other calls on the list to disappear if a race occurs.

Fix this by taking the client_call_lock when removing a call from whatever list its ->wait_link happens to be on.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	4.7 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-667 Improper Locking

Affected Products

Product	Versions
LinuxLinux	9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d to before 996a7208dadbf2cdda8d51444d5ee1fdd1ccbc92Affected 9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d to before b1fdb0bb3b6513f5bd26f92369fd6ac1a2422d8bAffected 9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d to before fc9de52de38f656399d2ce40f7349a6b5f86e787Affected
LinuxLinux	6.2Affected before 6.2Not affected 6.6.61 through 6.6.Not affected 6.11.8 through 6.11.Not affected 6.12 and laterNot affected

References

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