Improper Handling of Exceptional Conditions Affecting xen-tools package, versions <4.10.4_40-150000.3.84.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES150-XENTOOLS-3111930
  • published10 Nov 2022
  • disclosed9 Nov 2022

Introduced: 9 Nov 2022

CVE-2022-33748  (opens in a new tab)
CWE-755  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 xen-tools to version 4.10.4_40-150000.3.84.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-tools package and not the xen-tools package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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.

CVSS Scores

version 3.1