🛡️ CVE-2022-33748
🟡 CVSS 5.6 — Medium ✅ No Known Exploit CWE-755 NVD
5.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.6
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE CWE-755
Public Exploit ✅ No
Source NVD
Published 2022-10-11
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
debian-linux — —
fedora — —
xen 4.0 —

References

Mailing List, Mitigation, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/10/11/2
Mitigation, Patch, Vendor Advisory http://xenbits.xen.org/xsa/advisory-411.html
Mitigation, Patch, Vendor Advisory https://xenbits.xenproject.org/xsa/advisory-411.txt
Mailing List, Mitigation, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/10/11/2
Mitigation, Patch, Vendor Advisory http://xenbits.xen.org/xsa/advisory-411.html
Mitigation, Patch, Vendor Advisory https://xenbits.xenproject.org/xsa/advisory-411.txt

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