Bug 1951370 (CVE-2021-29945)

Summary:	CVE-2021-29945 Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	erack, jhorak, nobody, stransky, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 78.10, thunderbird 78.10	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-04-26 10:47:59 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:	1951356, 1951357, 1951358, 1951359, 1951360, 1951361, 1951375, 1951376, 1951377, 1951378, 1951379, 1951380
Bug Blocks:	1951230

Description Doran Moppert 2021-04-20 02:53:46 UTC

The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash.


*Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-29945

Comment 1 Doran Moppert 2021-04-20 02:53:50 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Christian Holler

Comment 2 errata-xmlrpc 2021-04-26 05:46:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1353 https://access.redhat.com/errata/RHSA-2021:1353

Comment 3 errata-xmlrpc 2021-04-26 05:48:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:1351 https://access.redhat.com/errata/RHSA-2021:1351

Comment 4 errata-xmlrpc 2021-04-26 06:00:18 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:1352 https://access.redhat.com/errata/RHSA-2021:1352

Comment 5 errata-xmlrpc 2021-04-26 06:16:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1350 https://access.redhat.com/errata/RHSA-2021:1350

Comment 6 Product Security DevOps Team 2021-04-26 10:47:59 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-2021-29945

Comment 7 errata-xmlrpc 2021-04-26 11:14:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:1362 https://access.redhat.com/errata/RHSA-2021:1362

Comment 8 errata-xmlrpc 2021-04-26 11:16:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1360 https://access.redhat.com/errata/RHSA-2021:1360

Comment 9 errata-xmlrpc 2021-04-26 11:31:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:1361 https://access.redhat.com/errata/RHSA-2021:1361

Comment 10 errata-xmlrpc 2021-04-26 11:49:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1363 https://access.redhat.com/errata/RHSA-2021:1363