Bug 2026059 (CVE-2021-4008)

Summary:	CVE-2021-4008 xorg-x11-server: SProcRenderCompositeGlyphs out-of-bounds access
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	ajax, bskeggs, caillon+fedoraproject, jglisse, mvanderw, ofourdan, rhughes, rstrode, sandmann, security-response-team, xgl-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	xorg-x11-server 21.1.2, xorg-x11-server 1.20.14	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Xorg-x11-server. An out-of-bounds access issue can occur in the SProcRenderCompositeGlyphs function due to improper validation of the request length.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-03 11:10:43 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:	2030160, 2030161, 2030162, 2032941, 2038066, 2038067
Bug Blocks:	2026049, 2026076

Description Guilherme de Almeida Suckevicz 2021-11-23 17:29:04 UTC

As per upstream:

The handler for the CompositeGlyphs request of the Render extension does not properly validate the request length leading to out of bounds memory write.

Comment 2 Guilherme de Almeida Suckevicz 2021-12-15 14:20:47 UTC

Created xorg-x11-server tracking bugs for this issue:

Affects: fedora-all [bug 2032941]

Comment 5 errata-xmlrpc 2022-01-03 10:21:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2022:0003 https://access.redhat.com/errata/RHSA-2022:0003

Comment 6 Product Security DevOps Team 2022-01-03 11:10:41 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-2021-4008

Comment 7 errata-xmlrpc 2022-05-10 14:18:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1917 https://access.redhat.com/errata/RHSA-2022:1917