smb: client: reject userspace cifs.spnego descriptions

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SUSE-SU-2026:21629-1 Security update for krb5

This update for krb5 fixes the following issues - CVE-2026-40355: Denial of Service via NULL pointer dereference in NegoEx mechanism bsc1263366. - CVE-2026-40356: Denial of Service via integer underflow and out-of-bounds read bsc1263367...

MIT Kerberos code-related vulnerabilities

MIT Kerberos is a software used by the Massachusetts Institute of Technology MIT for authentication in network clusters. As a network authentication protocol, its design goal is to provide robust authentication services for client/server applications through a key system. Prior to version 5.1.2.3...

EUVD-2025-36974

In the Linux kernel, the following vulnerability has been resolved: ixgbevf: fix mailbox API compatibility by negotiating supported features There was backward compatibility in the terms of mailbox API. Various drivers from various OSes supporting 10G adapters from Intel portfolio could easily...

Windows SPNEGO Privilege Escalation

The vulnerability of the SPNEGO Extended Negotiation NEGOEX security mechanism for Windows operating systems is related to synchronization errors when using a common resource “Race Condition”. Exploiting this vulnerability can allow an attacker to increase their privileges...