CVE-2021-47109

Katalog CVE

CVSS 5.5 · Medium EPSS 0,69%

Kerentanan Integer Overflow or Wraparound pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: neighbour: allow NUD_NOARP entries to be forced GCed IFF_POINTOPOINT interfaces use NUD_NOARP entries for IPv6. It's possible to fill up the neighbour table with enough entries that it will overflow for valid connections after that. This behaviour is more prevalent after commit 58956317c8de ("neighbor: Improve garbage collection") is applied, as it prevents removal from entries that are not NUD_FAILED, unless they are more than 5s old.

Rincian

Terbit di NVD

15 Maret 2024

Terakhir diubah

4 Agustus 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,69% peluang dieksploitasi; lebih tinggi dari 51,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/7a6b1ab7475fd6478eeaf5c9d1163e7a18125c8f patch
• https://git.kernel.org/stable/c/d17d47da59f726dc4c87caebda3a50333d7e2fd3 patch
• https://git.kernel.org/stable/c/d99029e6aab62aef0a0251588b2867e77e83b137 patch
• https://git.kernel.org/stable/c/ddf088d7aaaaacfc836104f2e632b29b1d383cfc patch