Bug 2102205 (CVE-2022-34494)

Summary:	CVE-2022-34494 kernel: a double free in drivers/rpmsg/virtio_rpmsg_bus.c
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bdettelb, bhu, bskeggs, chwhite, crwood, ddepaula, dhoward, dvlasenk, fhrbata, hdegoede, hkrzesin, hpa, jarod, jarodwilson, jburrell, jfaracco, jferlan, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, lzampier, masami256, mchehab, nmurray, ptalbert, qzhao, rvrbovsk, scweaver, steved, tyberry, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.19-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A double free flaw was found in the Linux kernel Remote Processor Messaging (rpmsg) framework. This flaw could allow a local user to crash the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-08-29 10:08:27 UTC	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:	2102206
Bug Blocks:	2102210

Description Marian Rehak 2022-06-29 13:09:19 UTC

A double free in rpmsg_virtio_add_ctrl_dev in drivers/rpmsg/virtio_rpmsg_bus.c may lead to a crash.

Reference:

https://github.com/torvalds/linux/commit/1680939e9ecf7764fba8689cfb3429c2fe2bb23c
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4

Comment 1 Marian Rehak 2022-06-29 13:09:49 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2102206]

Comment 2 Justin M. Forbes 2022-06-29 16:11:10 UTC

This was fixed for Fedora with the 5.18.4 stable kernel rebases.