SB20251028144 - SUSE update for xen 

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Main Vulnerability Database SB20251028144

SB20251028144 - SUSE update for xen

Published: October 28, 2025

Security Bulletin ID SB20251028144
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2025-27466)

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error when updating the reference TSC area. A malicious guest can perform a denial of service (DoS) attack against the hypervisor.



2) NULL pointer dereference (CVE-ID: CVE-2025-58142)

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error by assuming the SIM page is mapped when a synthetic timer message has to be delivered. A malicious guest can perform a denial of service (DoS) attack against the hypervisor.


3) Race condition (CVE-ID: CVE-2025-58143)

The vulnerability allows a malicious guest to compromise the hypervisor.

The vulnerability exists due to a race condition in the mapping of the reference TSC page. A malicious guest can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.


4) Out-of-bounds write (CVE-ID: CVE-2025-58147)

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to a boundary error within the vpmask_set() function when processing HV_VP_SET Sparse format. A malicious guest can initiate  hypercall to trigger an out-of-bounds write and execute arbitrary code on the hypervisor. 


5) Out-of-bounds read (CVE-ID: CVE-2025-58148)

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

The vulnerability exists due to a boundary condition within the send_ipi() function. A malicious guest can initiate hypercalls using any input format to trigger an out-of-bounds read error and read contents of memory on the hypervisor.


Remediation

Install update from vendor's website.

References