SB20260828124 - Use-after-free in Linux kernel soc xilinx driver
Published: August 28, 2026
Security Bulletin ID
SB20260828124
CSH Severity
Low
Patch available
YES
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) Use-after-free (CVE-ID: CVE-2026-80654)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to use-after-free in the rx mailbox channel handling in drivers/soc/xilinx/zynqmp_power.c when processing mailbox messages after device removal. A local user can trigger message delivery to the stale channel to execute arbitrary code.
The issue occurs because the receive mailbox channel may remain active after the device is removed.
Remediation
Install update from vendor's website.