SB2026061108 - Fedora 43 update for kernel

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Main Vulnerability Database SB2026061108

SB2026061108 - Fedora 43 update for kernel

Published: June 11, 2026 Updated: July 25, 2026

Security Bulletin ID SB2026061108
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2025-10263)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to improper access control in Stage 2 translation handling when invalidating translation lookaside buffer entries on affected Arm systems. A local user can trigger writes from a malicious guest after write permissions have been revoked to escalate privileges.

Only Xen on Arm in multi-core configurations is affected. The issue does not affect reads.


Remediation

Install update from vendor's website.

References