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6 vulnerabilities by lldpd_project
CVE-2026-46433 (GCVE-0-2026-46433)
Vulnerability from cvelistv5 – Published: 2026-06-09 22:49 – Updated: 2026-06-10 18:12
VLAI
Title
lldpd: Heap OOB Read in VLAN Decapsulation memmove
Summary
lldpd is an implementation of IEEE 802.1ab (LLDP). Prior to version 1.0.22, lldpd_decode() in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove() to shift the frame payload 4 bytes left. The third argument (byte count) is s - 2 * ETHER_ADDR_LEN but should be s - 2 * ETHER_ADDR_LEN - 4, causing a 4-byte heap buffer over-read past the malloc(h_mtu) allocation when the received frame size equals the interface MTU. This issue has been patched in version 1.0.22.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/lldpd/lldpd/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/lldpd/lldpd/pull/787 | x_refsource_MISC |
| https://github.com/lldpd/lldpd/commit/ca931be63a9… | x_refsource_MISC |
| https://github.com/lldpd/lldpd/releases/tag/1.0.22 | x_refsource_MISC |
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CVE-2023-41910 (GCVE-0-2023-41910)
Vulnerability from cvelistv5 – Published: 2023-09-05 00:00 – Updated: 2024-09-30 17:18
VLAI
Summary
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
4 references
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CVE-2021-43612 (GCVE-0-2021-43612)
Vulnerability from cvelistv5 – Published: 2023-04-15 00:00 – Updated: 2025-02-13 16:28
VLAI
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-787 - Out-of-bounds Write
Assigner
References
6 references
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CVE-2020-27827 (GCVE-0-2020-27827)
Vulnerability from cvelistv5 – Published: 2021-03-18 00:00 – Updated: 2025-12-03 18:20
VLAI
Summary
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | lldp/openvswitch |
Affected:
lldpd 1.0.8, openvswitch 2.14.1, openvswitch 2.13.2, openvswitch 2.12.2, openvswitch 2.11.5, openvswitch 2.10.6, openvswitch 2.9.8, openvswitch 2.8.10, openvswitch 2.7.12, openvswitch 2.6.9
|
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CVE-2015-8011 (GCVE-0-2015-8011)
Vulnerability from cvelistv5 – Published: 2020-01-28 18:15 – Updated: 2024-08-06 08:06
VLAI
Summary
Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2015/10/16/2 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2015/10/30/2 | x_refsource_MISC |
| https://github.com/vincentbernat/lldpd/commit/dd4… | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4836 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 | x_refsource_MISC |
Date Public
2015-10-03 00:00
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CVE-2015-8012 (GCVE-0-2015-8012)
Vulnerability from cvelistv5 – Published: 2020-01-28 18:15 – Updated: 2024-08-06 08:06
VLAI
Summary
lldpd before 0.8.0 allows remote attackers to cause a denial of service (assertion failure and daemon crash) via a malformed packet.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vincentbernat/lldpd/commit/793… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2015/10/30/2 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2015/10/18/2 | x_refsource_MISC |
| https://github.com/vincentbernat/lldpd/commit/922… | x_refsource_CONFIRM |
Date Public
2015-10-03 00:00
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