PT-2022-21859 · Xen+1 · Xen+1

Jan Beulich · Published 2022-10-11 · Updated 2024-06-15 · CVE-2022-33748

Positive Technologies (AI Summary)

CVSS v3.1

5.6

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Xen (affected versions not specified)

Description The issue is related to a lock order inversion in transitive grant copy handling. This occurred after a missing cleanup call was inserted on an error handling path as part of XSA-226, without considering locking requirements. As a result, two cooperating guests granting each other transitive grants can cause locks to be acquired in a nested manner but in opposite order. With suitable timing between the involved grant copy operations, this may result in the locking up of a CPU.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

CVE-2022-33748

DSA-5272-1

OPENSUSE-SU-2022_3665-1

OPENSUSE-SU-2022_3727-1

OPENSUSE-SU-2022_3947-1

OPENSUSE-SU-2022_4007-1

OPENSUSE-SU-2024:12561-1

SUSE-SU-2022:3665-1

SUSE-SU-2022:3727-1

SUSE-SU-2022:3728-1

SUSE-SU-2022:3925-1

SUSE-SU-2022:3928-1

SUSE-SU-2022:3947-1

SUSE-SU-2022:3971-1

SUSE-SU-2022:4007-1

SUSE-SU-2022:4051-1

SUSE-SU-2022:4241-1

Affected Products

Suse

Xen

References · 90

• https://osv.dev/vulnerability/CVE-2022-33748 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12561-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4007-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3727-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3665-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-33748 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3928-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-33748 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-33748 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3728-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3925-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202402-07 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4051-1 · Vendor Advisory