CVE-2026-89539 SUNRPC: reject duplicate CREDS_VALUE options

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: reject duplicate CREDSVALUE options gssxdecoptionarray walks the wire-supplied option array and, for every entry whose name matches CREDSVALUE, calls gssxdeclinuxcreds on the same struct svccred. That helper unconditional...