Bug 2268313 (CVE-2023-52596)

Summary:	CVE-2023-52596 kernel: sysctl: Fix out of bounds access for empty sysctl registers
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
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 6.6.16, kernel 6.7.4, kernel 6.8-rc1	Doc Type:	If docs needed, set a value
Doc Text:	An out of bounds access flaw was found in empty sysctl registers in the Linux kernel. This may lead to a crash.	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:	2268314
Bug Blocks:	2268346

Description Zack Miele 2024-03-06 22:17:20 UTC

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

sysctl: Fix out of bounds access for empty sysctl registers

The Linux kernel CVE team has assigned CVE-2023-52596 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030645-CVE-2023-52596-b98e@gregkh/T

Comment 1 Zack Miele 2024-03-06 22:17:52 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2268314]

Comment 2 Justin M. Forbes 2024-03-07 23:49:12 UTC

This was fixed for Fedora with the 6.7.4 stable kernel updates.

Comment 4 Alex 2024-06-09 15:13:18 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52596 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags WRITE OOB DISK INIT 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.