SB2025080601 - Fedora 42 update for xen

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Main Vulnerability Database SB2025080601

SB2025080601 - Fedora 42 update for xen

Published: August 6, 2025

Security Bulletin ID SB2025080601
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Improper error handling (CVE-ID: CVE-2025-27465)

CWE-ID: CWE-388 - Error Handling

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


The vulnerability allows a local guest to crash the hypervisor.

The vulnerability exists die to incorrect stubs exception handling for flags recovery. A malicious guest can force the hypervisor to crash. 


2) Information exposure through microarchitectural state after transient execution (CVE-ID: CVE-2024-36350)

CWE-ID: CWE-1342 - Information Exposure through Microarchitectural State after Transient Execution

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


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

The vulnerability exists due to information leak. A local user can obtain sensitive data from previous stores.


3) Information exposure through microarchitectural state after transient execution (CVE-ID: CVE-2024-36357)

CWE-ID: CWE-1342 - Information Exposure through Microarchitectural State after Transient Execution

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


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

The vulnerability exists due to information leak. A local user can obtain sensitive data from the L1D cache.


Remediation

Install update from vendor's website.

References