SB2025102249 - Fedora 41 update for xen

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Main Vulnerability Database SB2025102249

SB2025102249 - Fedora 41 update for xen

Published: October 22, 2025

Security Bulletin ID SB2025102249
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


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

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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. 


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

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


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