Bug 2267925 (CVE-2021-47097)

Summary:	CVE-2021-47097 kernel: Input: elantech - fix stack out of bound access in elantech_change_report_id()
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, ndegraef, 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 5.4.169, kernel 5.10.89, kernel 5.15.12, kernel 5.16	Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds (OOB) stack memory access flaw was found in elantech_change_report_id in drivers/input/mouse/elantech.c in the Linux kernel’s elantech module. This flaw allows a local attacker to crash the system or leak kernel internal information.	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:
Bug Blocks:	2268181

Description Zack Miele 2024-03-05 15:54:42 UTC

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

Input: elantech - fix stack out of bound access in elantech_change_report_id()

The Linux kernel CVE team has assigned CVE-2021-47097 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47097-e7f4@gregkh/T

Comment 6 Alex 2024-06-09 15:06:39 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47097 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags READ KASAN OOB  ; 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 2024-09-24 00:37:54 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 15 errata-xmlrpc 2024-09-24 02:29:25 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