Bug 1997961 (CVE-2021-3743)

Summary:	CVE-2021-3743 kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bhu, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, ihuguet, jarod, jarodwilson, jeremy, jforbes, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, nmurray, ptalbert, qzhao, rkeshri, rvrbovsk, steved, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-11 09:46:24 UTC	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:	1997962, 1998289, 2000393, 2000394
Bug Blocks:	1996549, 2002255

Description Dhananjay Arunesh 2021-08-26 07:34:29 UTC

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol qrtr_endpoint_post in the Linux kernel. A missing sanity check may allow a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.

References:
https://lists.openwall.net/netdev/2021/08/17/124
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e78c597c3eb

Comment 1 Dhananjay Arunesh 2021-08-26 07:35:05 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1997962]

Comment 13 Justin M. Forbes 2021-09-08 15:09:18 UTC

This is fixed for Fedora with the 5.13.14 stable kernel updates.

Comment 15 errata-xmlrpc 2022-05-10 14:39:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1975 https://access.redhat.com/errata/RHSA-2022:1975

Comment 16 errata-xmlrpc 2022-05-10 14:45:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1988 https://access.redhat.com/errata/RHSA-2022:1988

Comment 17 Product Security DevOps Team 2022-05-11 09:46:21 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-3743