Bug 2281942 (CVE-2024-35950)

Summary:	CVE-2024-35950 kernel: drm/client: Fully protect modes[] with dev->mode_config.mutex
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
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, 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 5.4.275, kernel 5.10.216, kernel 5.15.156, kernel 6.1.87, kernel 6.6.28, kernel 6.8.7, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A flaw in the Linux kernel's Direct Rendering Manager (DRM) client could cause system instability. The problem occurs because the modes[] array, used to store display mode pointers, wasn’t adequately protected by a mutex lock. This allows the array to reference memory that has already been freed or reused, leading to potential crashes or unpredictable behavior.	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:	2281944
Bug Blocks:	2282032

Description Robb Gatica 2024-05-20 17:24:10 UTC

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

drm/client: Fully protect modes[] with dev-&gt;mode_config.mutex

The Linux kernel CVE team has assigned CVE-2024-35950 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052015-CVE-2024-35950-41bf@gregkh/T

Comment 1 Robb Gatica 2024-05-20 17:24:49 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281944]

Comment 5 Alex 2024-06-09 15:35:41 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35950 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags LOCK SIMPLEFIX  ; 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.

Comment 18 errata-xmlrpc 2024-07-24 13:12:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4823 https://access.redhat.com/errata/RHSA-2024:4823

Comment 19 errata-xmlrpc 2024-07-24 13:24:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4831 https://access.redhat.com/errata/RHSA-2024:4831

Comment 20 errata-xmlrpc 2024-11-12 09:31:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315

Comment 21 errata-xmlrpc 2024-11-13 15:48:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2024:9546 https://access.redhat.com/errata/RHSA-2024:9546