Bug 2267919 (CVE-2021-47099)

Summary:	CVE-2021-47099 kernel: veth: ensure skb entering GRO are not cloned.
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.15.12, kernel 5.16	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:
Bug Blocks:	2268181

Description Zack Miele 2024-03-05 14:41:50 UTC

In the Linux kernel, the following vulnerability has been resolved:

veth: ensure skb entering GRO are not cloned.

The Linux kernel CVE team has assigned CVE-2021-47099 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47099-3127@gregkh/T

Comment 5 errata-xmlrpc 2024-04-18 02:29:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:1877 https://access.redhat.com/errata/RHSA-2024:1877

Comment 8 Alex 2024-06-09 16:35:03 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47099 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags KASAN SKB  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.