kernel: net/rxrpc: overflow in decoding of krb5 principal

Keberos 5 tickets being decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation...

The vulnerability in the implementation of the Keberos v5 protocol in the Linux operating system allows a perpetrator to increase their privileges or cause service failures.

The vulnerability in the implementation of the Keberos v5 protocol in the Linux operating system is related to the operation of writing data beyond the buffer in memory when processing RXRPC keys. Exploiting this vulnerability can allow an attacker to increase their privileges or cause service...