CVE-2020-27672

Katalog CVE

CVSS 7.0 · High EPSS 0,26%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada xen, fedoraproject fedora +2 lainnya. Skor CVSS 3.1 7.0 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.

Rincian

Terbit di NVD

22 Oktober 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416: Use After Free

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 16,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://xenbits.xen.org/xsa/advisory-345.html patch · advisory vendor
• https://xenbits.xen.org/xsa/advisory-345.html patch · advisory vendor
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html mailing list · advisory pihak ketiga
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/01/19/7 mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202011-06 advisory pihak ketiga
• https://www.debian.org/security/2020/dsa-4804 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH...