SB2026012875 - SUSE update for xen 

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Main Vulnerability Database SB2026012875

SB2026012875 - SUSE update for xen

Published: January 28, 2026

Security Bulletin ID SB2026012875
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2025-58150)

The vulnerability allows a malicious guest to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Xen with shadow paging + tracing on x86 systems. An HVM guests running in shadow paging mode can trigger an out-of-bounds read error and read contents of memory on the system.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2026-23553)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incomplete IBPB for vCPU isolation. A guest processes can leverage information leaks to obtain information intended to be private to other entities in a guest.


Remediation

Install update from vendor's website.

References