CVE-2022-26362

Katalog CVE

CVSS 6.4 · Medium EPSS 0,38%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada xen, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 6.4 (Medium) menurut NVD.

Deskripsi (NVD)

x86 pv: Race condition in typeref acquisition 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, the logic for acquiring a type reference has a race condition, whereby a safely TLB flush is issued too early and creates a window where the guest can re-establish the read/write mapping before writeability is prohibited.

Rincian

Terbit di NVD

9 Juni 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.4 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:H/PR:H/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')

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 30,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://xenbits.xen.org/xsa/advisory-401.html patch · advisory vendor
• https://xenbits.xenproject.org/xsa/advisory-401.txt advisory vendor
• http://packetstormsecurity.com/files/167718/Xen-TLB-Flush-Bypass.html advisory pihak ketiga · vdb entry
• http://www.openwall.com/lists/oss-security/2022/06/09/3 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...