Bug 2151566 (CVE-2022-4293)

Summary:	CVE-2022-4293 vim: floating point exception in num_divide() in src/eval.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jburrell, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 9.0.0804	Doc Type:	If docs needed, set a value
Doc Text:	A floating point exception flaw was found in Vim's num_divide() function of the eval.c file. This issue occurs when dividing the largest negative number by -1. This could allow an attacker to trick a user into opening a specially crafted file, triggering an application to crash and leading to a denial of service.	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:	2151567, 2156268, 2156269
Bug Blocks:	2151568

Description Guilherme de Almeida Suckevicz 2022-12-07 14:05:43 UTC

Floating Point Comparison with Incorrect Operator in GitHub repository vim/vim prior to 9.0.0804.

Reference:
https://huntr.dev/bounties/385a835f-6e33-4d00-acce-ac99f3939143

Upstream patch:
https://github.com/vim/vim/commit/cdef1cefa2a440911c727558562f83ed9b00e16b

Comment 1 Guilherme de Almeida Suckevicz 2022-12-07 14:05:59 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2151567]