REDHAT-BUG-2463370: Null Pointer Dereference

Published Apr 28, 2026
·
Updated

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.

Affected Software

1 affected component
MIT MIT Kerberos 5<1.22.3

Event History

Apr 28, 2026
Data Sourced
via Red Hat·07:02 AM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2463370?

The severity of REDHAT-BUG-2463370 is considered high due to the potential for an unauthenticated remote attacker to terminate the process.

2

How do I fix REDHAT-BUG-2463370?

To fix REDHAT-BUG-2463370, upgrade MIT Kerberos 5 to version 1.22.3 or later.

3

What systems are affected by REDHAT-BUG-2463370?

REDHAT-BUG-2463370 affects systems running MIT Kerberos 5 versions prior to 1.22.3.

4

Can REDHAT-BUG-2463370 be exploited remotely?

Yes, REDHAT-BUG-2463370 can be exploited remotely by an unauthenticated attacker.

5

What happens if REDHAT-BUG-2463370 is exploited?

If REDHAT-BUG-2463370 is exploited, it causes a NULL pointer dereference that results in process termination.

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REDHAT-BUG-2463370 - Null Pointer Dereference - SecAlerts