Bug 2269672 (CVE-2024-2496)

Summary:	CVE-2024-2496 libvirt: NULL pointer dereference in udevConnectListAllInterfaces()
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ailan, berrange, ddepaula, eblake, jdenemar, jferlan, jmaloy, jsuchane, knoel, pkrempa, ymankad
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libvirt 9.8.0	Doc Type:	---
Doc Text:	A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2266014
Bug Blocks:	2269676

Description Mauro Matteo Cascella 2024-03-15 10:05:17 UTC

A NULL pointer dereference issue was found in libvirt in the udevConnectListAllInterfaces() function. It could occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API.

Upstream fix:
https://gitlab.com/libvirt/libvirt/-/commit/2ca94317ac642a70921947150ced8acc674ccdc8

Comment 2 Mauro Matteo Cascella 2024-03-15 10:07:59 UTC

Created libvirt tracking bugs for this issue:

Affects: fedora-39 [bug 2266014]

Comment 3 errata-xmlrpc 2024-04-30 09:53:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2236 https://access.redhat.com/errata/RHSA-2024:2236