Bug 2255286

Summary:	kernel: heap out-of-bounds write in perf_read_group
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, cye, cyin, dbohanno, debarbos, dvlasenk, ezulian, hkrzesin, jarod, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, tglozar, tyberry, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel's Performance Events system component. A condition can be triggered that allows data to be written past the end or before the beginning of the intended memory buffer. This may lead to a system crash, code execution, or local privilege escalation.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-12-26 12:01:17 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:	2255287
Bug Blocks:	2255284

Description Robb Gatica 2023-12-19 21:15:49 UTC

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.

A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().

We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b
https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b

Comment 1 Robb Gatica 2023-12-19 21:17:09 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2255287]

Comment 3 Justin M. Forbes 2023-12-19 22:12:22 UTC

This was fixed for Fedora with the 6.6.7 stable kernel updates.

Comment 7 Alex 2023-12-26 12:01:17 UTC


*** This bug has been marked as a duplicate of bug 2252731 ***