SB20260508108 - Privilege escalation via RxRPC Page-Cache Write in Linux kernel
Published: May 8, 2026
Security Bulletin ID
SB20260508108
CSH Severity
High
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource management error (CVE-ID: CVE-2026-43500)
The vulnerability allows a local user to escalate privileges on the system.
The RxRPC Page-Cache Write vulnerability exists due to improper management of internal resources. A local user can execute arbitrary code with root privileges.
Note, this vulnerability is one of two issues described as Dirty Frag.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.