Linux Kernel RxRPC Key Parsing Memory Leak Vulnerability

A memory leak vulnerability has been identified in the Linux kernel's RxRPC implementation, specifically within the function 'rxrpc_preparse_xdr_yfs_rxgk()'. The issue arises when the memory associated with 'token->rxgk' is not properly freed in certain error scenarios after allocation. This vulnerability affects the Linux kernel stable tree.

Impact

The vulnerability can lead to a memory leak, where allocated memory is not released, potentially causing increased memory usage and degradation of system performance over time.

Reproduction

The vulnerability can be reproduced by triggering the 'rxrpc_preparse_xdr_yfs_rxgk()' function in a scenario where an error occurs after the 'token->rxgk' memory has been allocated. This will result in the 'rxgk' memory not being freed, causing a memory leak.

Remediation

The vulnerability has been addressed in the Linux kernel stable tree. Users can upgrade to the latest version to apply the fix.