Bug 2273141 (CVE-2024-26720)

Summary:	CVE-2024-26720 kernel: mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
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, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 4.19.307, kernel 5.4.269, kernel 5.10.210, kernel 5.15.149, kernel 6.1.79, kernel 6.6.18, kernel 6.7.6, kernel 6.8	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:	2273142
Bug Blocks:	2273132

Description Robb Gatica 2024-04-03 23:17:51 UTC

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

mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again

The Linux kernel CVE team has assigned CVE-2024-26720 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024040344-CVE-2024-26720-06fa@gregkh/T

Comment 1 Robb Gatica 2024-04-03 23:18:31 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2273142]

Comment 3 Alex 2024-06-09 15:03:18 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26720 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DEADLOCK 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.

Comment 14 errata-xmlrpc 2024-07-15 05:11:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4533 https://access.redhat.com/errata/RHSA-2024:4533

Comment 15 errata-xmlrpc 2024-07-15 21:23:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:4554 https://access.redhat.com/errata/RHSA-2024:4554

Comment 16 errata-xmlrpc 2024-09-03 15:42:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:6206 https://access.redhat.com/errata/RHSA-2024:6206

Comment 17 errata-xmlrpc 2024-09-11 00:57:06 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

Comment 18 errata-xmlrpc 2024-09-24 00:38:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7001 https://access.redhat.com/errata/RHSA-2024:7001

Comment 19 errata-xmlrpc 2024-09-24 02:29:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:7000 https://access.redhat.com/errata/RHSA-2024:7000