Bug 2189615 (CVE-2023-29579)

Summary:	CVE-2023-29579 yasm: stack-based buffer overflow in x86_dir_cpu() in modules/arch/x86/x86arch.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:	fjansen, nickc, sipoyare
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2189616, 2189617, 2189618, 2189619
Bug Blocks:	2189257

Description Guilherme de Almeida Suckevicz 2023-04-25 16:52:33 UTC

yasm 1.3.0.55.g101bc was discovered to contain a stack overflow via the component yasm/yasm+0x43b466 in vsprintf.

Reference:
https://github.com/yasm/yasm/issues/214

Comment 1 Guilherme de Almeida Suckevicz 2023-04-25 16:52:50 UTC

Created yasm tracking bugs for this issue:

Affects: epel-all [bug 2189616]
Affects: fedora-all [bug 2189617]

Comment 3 Siddhesh Poyarekar 2023-04-25 18:39:09 UTC

yasm is a standalone program and is not designed to run untrusted code off the internet, so while fuzzed inputs expose real bugs, they do not constitute a security issue.