Bug#1142472: busybox: CVE-2026-38752 CVE-2026-38753 CVE-2026-38754 CVE-2026-38755

Source: busybox
Version: 1:1.38.0-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerabilities were published for busybox.

CVE-2026-38752[0]:
| A stack overflow in the evaluate() function (editors/awk.c) of
| BusyBox commit 371fe9 allows attackers to cause a Denial of Service
| (DoS) via supplying a crafted AWK script.


CVE-2026-38753[1]:
| A use-after-free in the awk_sub() function (editors/awk.c) of
| Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS)
| via supplying a crafted AWK script.


CVE-2026-38754[2]:
| 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.


CVE-2026-38755[3]:
| A heap overflow in the evalcommand() function (shell/ash.c) of
| Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS)
| via supplying a crafted input.


If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-38752
    https://www.cve.org/CVERecord?id=CVE-2026-38752
[1] https://security-tracker.debian.org/tracker/CVE-2026-38753
    https://www.cve.org/CVERecord?id=CVE-2026-38753
[2] https://security-tracker.debian.org/tracker/CVE-2026-38754
    https://www.cve.org/CVERecord?id=CVE-2026-38754
[3] https://security-tracker.debian.org/tracker/CVE-2026-38755
    https://www.cve.org/CVERecord?id=CVE-2026-38755

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore