DEBIAN-CVE-2026-88833

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Source
https://security-tracker.debian.org/tracker/CVE-2026-88833
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88833.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-88833
Upstream
  • CVE-2026-88833
Published
2026-10-13T17:17:48Z
Modified
2026-10-14T06:00:19Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / busybox

Package

Name
busybox
Purl
pkg:deb/debian/busybox?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.35.0-4
1:1.35.0-4+deb12u1
1:1.36.0-1~exp1
1:1.36.1-1
1:1.36.1-2
1:1.36.1-3
1:1.36.1-3.1
1:1.36.1-4
1:1.36.1-5
1:1.36.1-6~exp.1
1:1.36.1-6
1:1.36.1-7
1:1.36.1-8
1:1.36.1-9
1:1.37.0-1
1:1.37.0-2
1:1.37.0-3
1:1.37.0-4
1:1.37.0-5
1:1.37.0-6
1:1.37.0-7
1:1.37.0-8
1:1.37.0-9
1:1.37.0-10
1:1.37.0-10.1
1:1.38.0-1
1:1.38.0-2
1:1.38.0-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88833.json"

Debian:13 / busybox

Package

Name
busybox
Purl
pkg:deb/debian/busybox?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.37.0-6
1:1.37.0-7
1:1.37.0-8
1:1.37.0-9
1:1.37.0-10
1:1.37.0-10.1
1:1.38.0-1
1:1.38.0-2
1:1.38.0-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88833.json"

Debian:14 / busybox

Package

Name
busybox
Purl
pkg:deb/debian/busybox?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.37.0-6
1:1.37.0-7
1:1.37.0-8
1:1.37.0-9
1:1.37.0-10
1:1.37.0-10.1
1:1.38.0-1
1:1.38.0-2
1:1.38.0-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88833.json"