CVE-2026-46433

Katalog CVE

CVSS 6.5 · Medium EPSS 0,37%

Kerentanan Out-of-bounds Read pada lldpd project lldpd. Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

9 Juni 2026

Terakhir diubah

23 Juli 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber github.com
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,37% peluang dieksploitasi; lebih tinggi dari 29,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/lldpd/lldpd/security/advisories/GHSA-2g8p-2h3j-63m3 advisory vendor
• https://github.com/lldpd/lldpd/commit/ca931be63a9cae0fcd8e9b6ae4e916d49f141cd6 patch
• https://github.com/lldpd/lldpd/pull/787 issue tracking · patch
• https://github.com/lldpd/lldpd/releases/tag/1.0.22 product · release notes