CVE-2026-62430 Affecting xen-libs package, versions <4.18.5_20-150600.3.53.3


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-SLES156-XENLIBS-18468389
  • published30 Jul 2026
  • disclosed29 Jul 2026

Introduced: 29 Jul 2026

NewCVE-2026-62430  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 xen-libs to version 4.18.5_20-150600.3.53.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-libs package and not the xen-libs package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking to avoid concurrent changes. As a result, a guest could change the index after it being checked, causing a subsequent out-of-bound read access to the contents of an array.

CVSS Base Scores

version 3.1