CVE-2021-4032

Katalog CVE

CVSS 4.4 · Medium EPSS 0,39%

Kerentanan Incomplete Cleanup pada linux kernel. Skor CVSS 3.1 4.4 (Medium) menurut NVD.

Deskripsi (NVD)

A vulnerability was found in the Linux kernel's KVM subsystem in arch/x86/kvm/lapic.c kvm_free_lapic when a failure allocation was detected. In this flaw the KVM subsystem may crash the kernel due to mishandling of memory errors that happens during VCPU construction, which allows an attacker with special user privilege to cause a denial of service. This flaw affects kernel versions prior to 5.15 rc7.

Rincian

Terbit di NVD

21 Januari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-459: Incomplete Cleanup

EPSS (30 hari)

0,39% peluang dieksploitasi; lebih tinggi dari 31,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=2027403 issue tracking · patch · advisory pihak ketiga
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f7d8a19f9a056a05c5c509fa65af472a... exploit · patch · advisory pihak ketiga
• https://lkml.org/lkml/2021/9/8/587 exploit · advisory pihak ketiga