CVE-2022-33748

描述

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path. While doing so, locking requirements were not paid attention to. As a result two cooperating guests granting each other transitive grants can cause locks to be acquired nested within one another, but in respectively opposite order. With suitable timing between the involved grant copy operations this may result in the locking up of a CPU.

如何修補 CVE-2022-33748

要修補 CVE-2022-33748,請將受影響套件升級到下列已修補版本。

• —升級至 4.15.4-r0 或更新版本

CVE-2022-33748 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• >= 4.0, < 4.15.4-r0

CVSS 分數

參考連結(1)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2022-33748