CVE catalog
CVE-2021-43612
lldpd: CVE-2021-43612
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.14% · Oct 25, 2026
In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.
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 | lldpd | sid | 1.0.23-1 | fixed |
| Debian | lldpd | forky | 1.0.22-1 | fixed |
| Debian | lldpd | trixie | 1.0.18-1 | fixed |
| Debian | lldpd | bookworm | 1.0.16-1+deb12u1 | fixed |
| Debian | lldpd | bookworm-security | 1.0.16-1+deb12u1 | fixed |
| Opensuse | lldpd | tumbleweed | 1.0.13-1.1 | fixed |
| Ubuntu | lldpd | 16.04 | 0.7.16-1 | vulnerable |
| Ubuntu | lldpd | 16.04 | 0.7.19-1 | vulnerable |
| Ubuntu | lldpd | 18.04 | 0.9.8-1 | vulnerable |
| Ubuntu | lldpd | 18.04 | 0.9.9-1 | vulnerable |
| Ubuntu | lldpd | 18.04 | 0.9.9-1ubuntu0.1 | vulnerable |
| Ubuntu | lldpd | 20.04 | 1.0.4-1 | vulnerable |
| Ubuntu | lldpd | 20.04 | 1.0.4-1build1 | vulnerable |
| Ubuntu | lldpd | 20.04 | 1.0.4-1build2 | vulnerable |
| Ubuntu | lldpd | 22.04 | 1.0.11-1 | vulnerable |
| Ubuntu | lldpd | 22.04 | 1.0.12-1 | vulnerable |
| Ubuntu | lldpd | 22.04 | 1.0.13-1 | vulnerable |
| Ubuntu | lldpd | 24.04 | 1.0.17-1 | vulnerable |
| Ubuntu | lldpd | 24.04 | 1.0.18-1 | vulnerable |
| Ubuntu | lldpd | 24.04 | 1.0.18-1build1 | vulnerable |
| Ubuntu | lldpd | 24.04 | 1.0.18-1build3 | vulnerable |
| Ubuntu | lldpd | 24.04 | 1.0.18-1ubuntu0.1 | vulnerable |
| Ubuntu | lldpd | 25.10 | 1.0.18-1build3 | vulnerable |
| Ubuntu | lldpd | 25.10 | 1.0.18-1build4 | vulnerable |
| Ubuntu | lldpd | 26.10 | 1.0.19-1 | vulnerable |
| Ubuntu | lldpd | 26.10 | 1.0.22-1 | vulnerable |
| Ubuntu | lldpd | 26.10 | 1.0.22-1build1 | vulnerable |
| Ubuntu | lldpd | 26.04 | 1.0.18-1build4 | vulnerable |
| Ubuntu | lldpd | 26.04 | 1.0.19-1 | vulnerable |
| Ubuntu | lldpd | 26.04 | 1.0.19-1ubuntu0.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lldpd | source | sid | 1.0.13-1 | not yet assigned | Not reported | Not reported |
| Debian | lldpd | source | forky | 1.0.13-1 | not yet assigned | Not reported | Not reported |
| Debian | lldpd | source | trixie | 1.0.13-1 | not yet assigned | Not reported | Not reported |
| Debian | lldpd | source | bookworm | 1.0.13-1 | not yet assigned | Not reported | Not reported |
| Opensuse | lldpd | rpm | tumbleweed | 1.0.13-1.1 | Not reported | OPENSUSE-SU-2024:11635-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [liblldpctl4]Unknown
Source package: [lldpd]
Details (1)
1.0.22-2.3· x86_64 · tumbleweedUnknown · Fixed:
1.0.13-1.1Version impact unknown
dsa · lldpd · opensuse · tumbleweed
- [lldpd-devel]Unknown
Source package: [lldpd]
Details (1)
1.0.22-2.3· x86_64 · tumbleweedUnknown · Fixed:
1.0.13-1.1Version impact unknown
dsa · lldpd · opensuse · tumbleweed
- [lldpd]Fixed
Source package: [lldpd]
Details (1)
1.0.22-2.3· x86_64 · tumbleweedFixed · Fixed:
1.0.13-1.1dsa · lldpd · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [liblldpctl-dev]Fixed
Source package: [lldpd]
Details (4)
1.0.16-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
- [lldpd]Fixed
Details (4)
1.0.16-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
1.0.16-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.0.13-1dsa · lldpd · debian · bookworm; dsa · lldpd · debian · 12
[Debian 13 (Trixie)]
- [liblldpctl-dev]Fixed
Source package: [lldpd]
Details (2)
1.0.18-1+b1· amd64 · trixieFixed · Fixed:
1.0.13-1dsa · lldpd · debian · 13
1.0.18-1+b2· arm64 · trixieFixed · Fixed:
1.0.13-1dsa · lldpd · debian · 13
- [lldpd]Fixed
Source package: [lldpd]
Details (2)
1.0.18-1+b1· amd64 · trixieFixed · Fixed:
1.0.13-1dsa · lldpd · debian · 13
1.0.18-1+b2· arm64 · trixieFixed · Fixed:
1.0.13-1dsa · lldpd · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2024:9158]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_11635-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-43612]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-43612]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11635-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-43612]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]