CVE catalog
CVE-2016-6301
busybox: CVE-2016-6301
- Severity
- Critical · CVSS 10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 8.97% · Oct 25, 2026
The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | busybox | sid | 1:1.38.0-3 | fixed |
| Debian | busybox | forky | 1:1.38.0-3 | fixed |
| Debian | busybox | trixie | 1:1.37.0-6 | fixed |
| Debian | busybox | bookworm | 1:1.35.0-4+deb12u1 | fixed |
| Alpine | busybox | 3.2 | 1.24.2-r1 | fixed |
| Alpine | busybox | 3.3 | 1.24.2-r1 | fixed |
| Alpine | busybox | 3.4 | 1.24.2-r12 | fixed |
| Alpine | busybox | 3.5 | 1.25.0-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | busybox | source | sid | 1:1.27.2-1 | unimportant | Not reported | [833442] |
| Debian | busybox | source | forky | 1:1.27.2-1 | unimportant | Not reported | [833442] |
| Debian | busybox | source | trixie | 1:1.27.2-1 | unimportant | Not reported | [833442] |
| Debian | busybox | source | bookworm | 1:1.27.2-1 | unimportant | Not reported | [833442] |
| Alpine | busybox | apk | 3.2 | 1.24.2-r1 | Not reported | ALPINE-CVE-2016-6301 | Not reported |
| Alpine | busybox | apk | 3.3 | 1.24.2-r1 | Not reported | ALPINE-CVE-2016-6301 | Not reported |
| Alpine | busybox | apk | 3.4 | 1.24.2-r12 | Not reported | ALPINE-CVE-2016-6301 | Not reported |
| Alpine | busybox | apk | 3.5 | 1.25.0-r0 | Not reported | ALPINE-CVE-2016-6301 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [busybox]Fixed
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [busybox-static]Fixed
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [busybox-syslogd]Fixed
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1· all · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1· all · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [udhcpc]Fixed
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
- [udhcpd]Fixed
Source package: [busybox]
Details (2)
1:1.35.0-4+deb12u1+b1· amd64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
1:1.35.0-4+deb12u1+b1· arm64 · bookwormFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · bookworm; dsa · busybox · debian · 12
[Debian 13 (Trixie)]
- [busybox]Fixed
Source package: [busybox]
Details (2)
1:1.37.0-6+b8· amd64 · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
1:1.37.0-6+b8· arm64 · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
- [busybox-static]Fixed
Source package: [busybox]
Details (2)
1:1.37.0-6+b8· amd64 · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
1:1.37.0-6+b8· arm64 · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
- [busybox-syslogd]Fixed
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
- [udhcpc]Fixed
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
- [udhcpd]Fixed
Source package: [busybox]
Details (2)
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
1:1.37.0-6· all · trixieFixed · Fixed:
1:1.27.2-1dsa · busybox · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_0135-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2016-6301]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-6301]
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2019/icsa-19-155-01.json]
- [https://security-tracker.debian.org/tracker/CVE-2016-6301]
[CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]