Description
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Only put the call ref if one was acquired
rxrpc_input_packet_on_conn() can process a to-client packet after the current client call on the channel has already been torn down. In that case chan->call is NULL, rxrpc_try_get_call() returns NULL and there is no reference to drop.
The client-side implicit-end error path does not account for that and unconditionally calls rxrpc_put_call(). This turns a protocol error path into a kernel crash instead of rejecting the packet.
Only drop the call reference if one was actually acquired. Keep the existing protocol error handling unchanged.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 5e6ef4f1017c7f844e305283bbd8875af475e2fc, < b8f66447448d6c305a51413a67ec8ed26aa7d1dd; >= 5e6ef4f1017c7f844e305283bbd8875af475e2fc, < 0c156aff8a2d4fa0d61db7837641975cf0e5452d; >= 5e6ef4f1017c7f844e305283bbd8875af475e2fc, < 8299ca146489664e3c0c90a3b8900d8335b1ede4; >= 5e6ef4f1017c7f844e305283bbd8875af475e2fc, < 9fb09861e2b8d1abfe2efaf260c9f1d30080ea38; >= 5e6ef4f1017c7f844e305283bbd8875af475e2fc, < 6331f1b24a3e85465f6454e003a3e6c22005a5c5 |
| Linux | Linux | 6.2 |
References
- https://git.kernel.org/stable/c/0c156aff8a2d4fa0d61db7837641975cf0e5452dPatch
- https://git.kernel.org/stable/c/6331f1b24a3e85465f6454e003a3e6c22005a5c5Patch
- https://git.kernel.org/stable/c/8299ca146489664e3c0c90a3b8900d8335b1ede4Patch
- https://git.kernel.org/stable/c/9fb09861e2b8d1abfe2efaf260c9f1d30080ea38Patch
- https://git.kernel.org/stable/c/b8f66447448d6c305a51413a67ec8ed26aa7d1ddPatch
Timeline
- Published
- Apr 24, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Modified