Bug 2284277 (CVE-2024-36881)

Summary:	CVE-2024-36881 kernel: mm/userfaultfd: reset ptes when close() for wr-protected ones
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, mbenatto, 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 6.6.31, kernel 6.8.10, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:		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:	2284278, 2298715
Bug Blocks:	2284293

Description ybuenos 2024-06-02 15:34:27 UTC

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

mm/userfaultfd: reset ptes when close() for wr-protected ones

The Linux kernel CVE team has assigned CVE-2024-36881 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024053032-CVE-2024-36881-24d0@gregkh/T

Comment 1 ybuenos 2024-06-02 15:35:05 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2284278]

Comment 4 Alex 2024-06-09 16:13:08 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-36881 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags DISK IMPROVEONLY  ; 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 11 errata-xmlrpc 2024-11-12 09:33:29 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