Bug 2025056 (CVE-2021-3968)

Summary:	CVE-2021-3968 vim: Heap use-after-free in ml_append_int function
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bdettelb, caswilli, fjansen, gchamoul, gparvin, jburrell, jwong, karsten, kaycoth, pahickey, stcannon, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.3610	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in vim. A possible heap use-after-free vulnerability could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to system availability.	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:	2025058, 2025397
Bug Blocks:	2025066

Description Pedro Sampaio 2021-11-19 19:18:28 UTC

vim is vulnerable to heap use-after-free in ml_append_int function

https://huntr.dev/bounties/00d62924-a7b4-4a61-ba29-acab2eaa1528
https://github.com/vim/vim/commit/a062006b9de0b2947ab5fb376c6e67ef92a8cd69

Comment 1 Pedro Sampaio 2021-11-19 19:18:55 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2025058]