Bug 2039685 (CVE-2021-4192)

Summary:	CVE-2021-4192 vim: use-after-free in win_linetabsize()
Product:	[Other] Security Response	Reporter:	Cedric Buissart <cbuissar>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, caswilli, dhalasz, fhrdina, fjansen, gchamoul, jburrell, jnakfour, jwong, karsten, kaycoth, micjohns, sthirugn, tkasparek, vkrizan, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.3949	Doc Type:	If docs needed, set a value
Doc Text:	It was found that vim was vulnerable to use-after-free flaw in win_linetabsize(). Sourcing a specially crafted file in vim could crash the vim process or possibly lead to other undefined behaviors.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-02-01 22:03:14 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:	2039693, 2039704, 2039705, 2039706, 2043462
Bug Blocks:	2039688

Description Cedric Buissart 2022-01-12 08:57:08 UTC

vim is vulnerable to Use After Free 

Upstream fix:
https://github.com/vim/vim/commit/4c13e5e6763c6eb36a343a2b8235ea227202e952

Comment 1 Cedric Buissart 2022-01-12 09:09:05 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2039693]

Comment 5 errata-xmlrpc 2022-02-01 21:01:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:0366 https://access.redhat.com/errata/RHSA-2022:0366

Comment 6 Product Security DevOps Team 2022-02-01 22:03:11 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-2021-4192