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CVE-2026-38754
Component Overview
Vulnerability Overview
Name
CVE-2026-38754
Source
NVD (
link
)
Debian (
link
)
Description
A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input.
CWEs
CWE-125
CWE-122
Published Date
Jul 15, 2026
Updated Date
Jul 22, 2026
Workaround
-
Advisories
https://lists.busybox.net/pipermail/busybox/2026-June/092353.html
Mailing List
Analysis
#
Affected Component
Analysis
busybox
Patched
Vulnerability Ratings
#
5.1
CVSSv31
7.5
CVSSv31
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
Exploitable
busybox
openwrt
master
1.38.0-r2
Exploitable
busybox
openwrt
openwrt-25.12
1.37.0-r6
Not Affected
busybox
yocto
kirkstone
1.35.0
Not Affected
busybox
yocto
scarthgap
1.36.1
Not Affected
Resolved with patches
#
busybox (yocto:master)
#
Title
Author
Resolve
1
ash: fix out-of-bounds read in ifsbreakup()
Sanghyun Park <sanghyun.park.cnu@gmail.com>
CVE-2026-38754