Bug 2284402 (CVE-2024-36019)

Summary:	CVE-2024-36019 kernel: regmap: maple: Fix cache corruption in regcache_maple_drop()
Product:	[Other] Security Response	Reporter:	ybuenos
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, ymittal, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.6.26, kernel 6.8.5, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel’s `regmap` subsystem. Due to improper indexing in the `regcache_maple_drop()` function, an out-of-bounds access could corrupt the cache by overwriting parts of it with kernel memory.	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:	2284403
Bug Blocks:	2284429

Description ybuenos 2024-06-03 08:31:47 UTC

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

regmap: maple: Fix cache corruption in regcache_maple_drop()

The Linux kernel CVE team has assigned CVE-2024-36019 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024053044-CVE-2024-36019-59fb@gregkh/T

Comment 1 ybuenos 2024-06-03 08:32:27 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2284403]

Comment 3 Alex 2024-06-09 16:11:24 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-36019 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags WRITE OOB DANGER SIMPLEFIX  ; these flags parsed automatically based on patch 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 8 errata-xmlrpc 2024-09-11 00:57:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:6567 https://access.redhat.com/errata/RHSA-2024:6567