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CVE-2021-33454
Component Overview
Vulnerability Overview
Name
CVE-2021-33454
Source
NVD (
link
)
Debian (
link
)
Description
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in yasm_expr_get_intnum() in libyasm/expr.c.
CWEs
CWE-476
Published Date
Jul 26, 2022
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d
Third Party Advisory
https://github.com/yasm/yasm/issues/166
Exploit
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d
Third Party Advisory
https://github.com/yasm/yasm/issues/166
Exploit
Analysis
#
Affected Component
Analysis
yasm
Patched
Vulnerability Rating
#
5.5
CVSSv31
Others affected components
#
Name
Project
Project Version
Version
Status
yasm
buildroot
2025.02.x
1.3.0
Patched
yasm
yocto
kirkstone
1.3.0+gitX
Not Affected
yasm
yocto
scarthgap
1.3.0+git
Patched
Resolved with patches
#
yasm (buildroot:2025.02.x)
#
Title
Author
Resolve
1
Fix null-pointer-dereference in yasm_expr_get_intnum
dataisland <dataisland@outlook.com>
CVE-2021-33454
yasm (buildroot:master)
#
Title
Author
Resolve
1
Fix null-pointer-dereference in yasm_expr_get_intnum
dataisland <dataisland@outlook.com>
CVE-2021-33454
yasm (yocto:scarthgap)
#
Title
Author
Resolve
1
Fix null-pointer-dereference in yasm_expr_get_intnum (#244)
dataisland <dataisland@outlook.com>
CVE-2021-33454