CVE-2022-42335

Katalog CVE

CVSS 7.8 · High EPSS 0,26%

Kerentanan NULL Pointer Dereference pada xen, fedoraproject fedora. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

Rincian

Terbit di NVD

25 April 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 17,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://xenbits.xen.org/xsa/advisory-430.html patch · advisory vendor
• https://xenbits.xenproject.org/xsa/advisory-430.txt patch · advisory vendor
• http://www.openwall.com/lists/oss-security/2023/04/25/1 mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGM...
• https://security.gentoo.org/glsa/202402-07