Bug 2013097 (CVE-2021-42252)

Summary:	CVE-2021-42252 kernel: memory overwrite in the kernel with potential privileges execution
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bdettelb, bhu, blc, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, jarod, jarodwilson, jburrell, jeremy, jforbes, jglisse, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rkeshri, rvrbovsk, steved, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.14.6	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in Aspeed Low Pin Count (LPC) Bus Controller in the Linux kernel. A miss in the sanity check may allow a malicious local normal privileged user to bypass the boundary check, and map pages that are located outside the memory region reserved by the driver.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-13 14:08:18 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:	2013098
Bug Blocks:	2013099

Description Marian Rehak 2021-10-12 06:13:37 UTC

A vulnerability was found in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in Aspeed Low Pin Count (LPC) Bus Controller. A miss in the sanity check may allow a malicious local normal privileged user to bypass the boundary check, and map pages that are located outside the memory region reserved by the driver.

Reference:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b49a0e69a7b1a68c8d3f64097d06dabb770fec96

Comment 1 Marian Rehak 2021-10-12 06:14:05 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2013098]

Comment 2 Justin M. Forbes 2021-10-12 16:55:22 UTC

This was fixed for Fedora with the 5.13.19 stable updates.

Comment 6 Product Security DevOps Team 2021-10-13 14:08:18 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-2021-42252