CVE-2025-58149 Affecting xen-libs package, versions <4.18.5_08-150600.3.34.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.41% (34th percentile)

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  • Snyk IDSNYK-SLES156-XENLIBS-14873364
  • published6 Jan 2026
  • disclosed5 Jan 2026

Introduced: 5 Jan 2026

CVE-2025-58149  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 xen-libs to version 4.18.5_08-150600.3.34.2 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.

When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain.

For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.

CVSS Base Scores

version 3.1