Bug 2132571 (CVE-2022-3256)

Summary:	CVE-2022-3256 vim: use-after-free in movemark() at mark.c
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	gchamoul, karsten, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 9.0.0530	Doc Type:	If docs needed, set a value
Doc Text:	A heap use-after-free vulnerability was found in vim's movemark() function of the src/mark.c file. This issue occurs because vim uses freed memory when 'autocmd' changes the mark. This flaw allows an attacker to trick a user into opening a specially crafted file, triggering a heap use-after-free that causes an application to crash, possibly executing code and corrupting memory.	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:	2132572, 2132748, 2132750
Bug Blocks:	2129135

Description TEJ RATHI 2022-10-06 07:49:29 UTC

Use After Free in vim/vim prior to 9.0.0530.

https://github.com/vim/vim/commit/8ecfa2c56b4992c7f067b92488aa9acea5a454ad
https://huntr.dev/bounties/8336a3df-212a-4f8d-ae34-76ef1f936bb3

Comment 1 TEJ RATHI 2022-10-06 07:49:55 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2132572]