Bug 2269179 (CVE-2023-52494)

Summary:	CVE-2023-52494 kernel: bus: mhi: host: Add alignment check for event ring read pointer
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.15.149, kernel 6.1.76, kernel 6.6.15, kernel 6.7.3, kernel 6.8-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux Kernel. 128 bit struct mhi_ring_element aligned event ring elements are expected, but an unaligned read pointer can be passed. An unaligned read pointer could lead to multiple issues, including a denial of service or ring buffer memory corruption.	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:	2269180
Bug Blocks:	2269239

Description Marco Benatto 2024-03-12 15:48:10 UTC

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: host: Add alignment check for event ring read pointer

The Linux kernel CVE team has assigned CVE-2023-52494 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/20240229155245.1571576-35-lee@kernel.org/T

Comment 1 Marco Benatto 2024-03-12 15:48:48 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2269180]

Comment 2 Justin M. Forbes 2024-03-26 16:47:58 UTC

This was fixed for Fedora with the 6.7.3 stable kernel updates.

Comment 3 Alex 2024-06-09 15:03:27 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52494 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DANGER SIMPLEFIX IMPROVEONLY  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.