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vulnerability
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CVE-2021-42380
Component Overview
Vulnerability Overview
Name
CVE-2021-42380
Source
NVD (
link
)
Debian (
link
)
Description
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the clrvar function
CWEs
CWE-416
CWE-416
Published Date
Nov 15, 2021
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211223-0002/
Third Party Advisory
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211223-0002/
Third Party Advisory
Analysis
#
Affected Component
Analysis
busybox
Patched
Vulnerability Ratings
#
7.2
CVSSv31
7.2
CVSSv31
6.5
CVSSv2
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
busybox
buildroot
2025.02.x
1.37.0
Not Affected
busybox
buildroot
master
1.38.0
Not Affected
busybox
openwrt
master
1.38.0-r2
Not Affected
busybox
openwrt
openwrt-25.12
1.37.0-r6
Not Affected
busybox
yocto
master
1.38.0
Not Affected
busybox
yocto
scarthgap
1.36.1
Patched
Resolved with patches
#
busybox (yocto:kirkstone)
#
Title
Author
Resolve
1
awk: fix use-after-realloc (CVE-2021-42380), closes 15601
Denys Vlasenko <vda.linux@googlemail.com>
CVE-2021-42380
busybox (yocto:scarthgap)
#
Title
Author
Resolve
1
awk: fix use-after-realloc (CVE-2021-42380), closes 15601
Denys Vlasenko <vda.linux@googlemail.com>
CVE-2021-42380