CVE-2026-31638
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.
Słabość
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.
Produkty, których dotyczy
- linux linux_kernel
Źródła
- https://git.kernel.org/stable/c/0c156aff8a2d4fa0d61db7837641975cf0e5452d
- https://git.kernel.org/stable/c/6331f1b24a3e85465f6454e003a3e6c22005a5c5
- https://git.kernel.org/stable/c/8299ca146489664e3c0c90a3b8900d8335b1ede4
- https://git.kernel.org/stable/c/9fb09861e2b8d1abfe2efaf260c9f1d30080ea38
- https://git.kernel.org/stable/c/b8f66447448d6c305a51413a67ec8ed26aa7d1dd
Znajdź błąd, zanim zrobi to atakujący.
Zaloguj się przez GitHub i uruchom pierwszy audyt w niecałą minutę. Plan darmowy nie wymaga karty kredytowej.