#1150942 busybox: CVE-2026-88833

Package:
src:busybox
Source:
src:busybox
Submitter:
Moritz Mühlenhoff
Date:
2026-10-14 21:41:02 UTC
Severity:
normal
Tags:
#1150942#5
Date:
2026-10-14 21:29:05 UTC
From:
To:
Hi,

The following vulnerability was published for busybox.

CVE-2026-88833[0]:
| A flaw was found in BusyBox's udhcpc DHCP client. When processing
| raw DHCP packets, the client replaces the validated packet length
| with an attacker-controlled value from the IP header without re-
| validating the minimum size. This leads to an integer underflow when
| subtracting header sizes, causing a subsequent memory copy with a
| massively oversized length. An attacker on the same network segment
| can send a specially crafted packet to crash the DHCP client,
| resulting in denial of service and loss of network connectivity.

https://bugzilla.redhat.com/show_bug.cgi?id=2531347


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

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-88833
https://www.cve.org/CVERecord?id=CVE-2026-88833

Please adjust the affected versions in the BTS as needed.