Bug 2270071 (CVE-2023-52614)

Summary:	CVE-2023-52614 kernel: PM / devfreq: Fix buffer overflow in trans_stat_show
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, ldoskova, lgoncalv, mleitner, mmilgram, mstowell, nmurray, ptalbert, rhel-process-autobot, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, watson-tool-maintainers, wcosta, williams, wmealing, ycote, ykopkova
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.15.149, kernel 6.1.76, kernel 6.6.15, kernel 6.7.3, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:	This linux kernel vulnerability occurs in the power management devfreq subsystem, specifically within the trans_stat_show function. The code previously used a basic snprintf call to display state transition statistics, which could trigger a buffer overflow if the resulting transition table was larger than a single memory page limit. Patched kernel versions resolve the issue by replacing the unsafe operation with a securely bounded scnprintf call. Additionally, the fix introduces safety checks to halt the operation early and return an -EFBIG error if the output data exceeds the PAGE_SIZE limit, preventing the memory corruption bug.	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:	2270072
Bug Blocks:	2270105

Description Zack Miele 2024-03-18 13:00:05 UTC

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

PM / devfreq: Fix buffer overflow in trans_stat_show

The Linux kernel CVE team has assigned CVE-2023-52614 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/20240318101458.2835626-9-lee@kernel.org/T

Comment 1 Zack Miele 2024-03-18 13:00:36 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2270072]

Comment 3 Justin M. Forbes 2024-03-26 16:11:25 UTC

This was fixed for Fedora with the 6.7.3 stable kernel updates.

Comment 5 Alex 2024-06-09 16:29:05 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52614 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags OOB WARNONLY PRINTF-TTY  ; 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 6 errata-xmlrpc 2024-11-12 09:20:25 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