CVE-2025-40129

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel’s sunrpc implementation where a null pointer dereference can occur during checksum processing. Specifically, in the xdr stream decode opaque auth() function, a zero-length checksum can lead to checksum.data being set to NULL. Subsequently, accessing checksum.data within the gss krb5 verify mic v2() function triggers a null pointer dereference.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.