CVE-2024-26462

Publication date 29 February 2024

Last updated 26 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
krb5	24.10 oracular	Not affected
	24.04 LTS noble	Fixed 1.20.1-6ubuntu2.5
	23.10 mantic	Ignored end of life, was needed
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

per upstream: "The ndr.c leak also affects an encoding function, and triggers if the input contains invalid UTF-8. This one might be triggerable by a request (though it may require elevated privilege), but I would not have requested a CVE for it myself."

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
krb5	Upstream: 7d0d85b

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-7314-1
Kerberos vulnerabilities
3 March 2025