Bug 2122718 (CVE-2021-33463)

Summary:	CVE-2021-33463 yasm: NULL pointer dereference in yasm_expr__copy_except() in libyasm/expr.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:	dominik, fjansen, lupinix.fedora, matthias, nickc, sipoyare
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
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Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2122732, 2122733, 2123107, 2123108
Bug Blocks:	2111238

Description Guilherme de Almeida Suckevicz 2022-08-30 16:35:09 UTC

An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in yasm_expr__copy_except() in libyasm/expr.c.

Reference:
https://github.com/yasm/yasm/issues/174

Comment 1 Guilherme de Almeida Suckevicz 2022-08-30 17:13:31 UTC

Created yasm tracking bugs for this issue:

Affects: epel-all [bug 2122732]
Affects: fedora-all [bug 2122733]