CVE-2026-62433 Affecting xen package, versions <4.20.3+127-gc42374a105-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-XEN-18384749
  • published29 Jul 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

NewCVE-2026-62433  (opens in a new tab)

How to fix?

Upgrade Debian:unstable xen to version 4.20.3+127-gc42374a105-1 or higher.

NVD Description

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

Parts of the DM_OP handling code assumes the caller has provided the required number of buffers for the given operation without any checking being done. As a result, certain operations might access stack rubble as structures are possibly uninitialized.

CVSS Base Scores

version 3.1