CVE-2021-28688

Katalog CVE

CVSS 6.5 · Medium EPSS 0,33%

Kerentanan Improper Initialization pada linux kernel, debian linux. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.

Rincian

Terbit di NVD

6 April 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-665: Improper Initialization

EPSS (30 hari)

0,33% peluang dieksploitasi; lebih tinggi dari 24,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://xenbits.xenproject.org/xsa/advisory-371.txt patch · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html advisory pihak ketiga