CVE-2022-26364

Katalog CVE

CVSS 6.7 · Medium EPSS 0,50%

Kerentanan pada xen, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 6.7 (Medium) menurut NVD.

Deskripsi (NVD)

x86 pv: Insufficient care with non-coherent mappings T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by Xen. Unfortunately, Xen's safety logic doesn't account for CPU-induced cache non-coherency; cases where the CPU can cause the content of the cache to be different to the content in main memory. In such cases, Xen's safety logic can incorrectly conclude that the contents of a page is safe.

Rincian

Terbit di NVD

9 Juni 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

EPSS (30 hari)

0,50% peluang dieksploitasi; lebih tinggi dari 40,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://xenbits.xen.org/xsa/advisory-402.html patch · advisory vendor
• https://xenbits.xenproject.org/xsa/advisory-402.txt advisory vendor
• http://packetstormsecurity.com/files/167710/Xen-PV-Guest-Non-SELFSNOOP-CPU-Memory-Corruption.html exploit · advisory pihak ketiga · vdb entry
• http://www.openwall.com/lists/oss-security/2022/06/09/4 mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202208-23 advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5184 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH65U6FTTB5ML...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMO...