Linux Kernel Updates for Ubuntu (Xilinx ZynqMP)

As of May 2, 2025, Ubuntu has released critical security updates addressing vulnerabilities in the Linux kernel specific to Xilinx ZynqMP processors. These updates are essential for the following Ubuntu versions:

- Ubuntu 22.04 LTS: Referenced in Security Notice USN-7475-1
- Ubuntu 20.04 LTS: Referenced in Security Notice USN-7461-3

Summary of Updates

The updates resolve multiple security issues identified within various subsystems of the Linux kernel. Key vulnerabilities include:

1. USN-7475-1 (Ubuntu 22.04 LTS):
- Notable vulnerability: An out-of-bounds write risk in the watch_queue event notification subsystem, potentially allowing local attackers to cause system crashes or escalate privileges (CVE-2022-0995).
- Other affected subsystems include GPU drivers, network drivers, file systems, and several network protocols (e.g., iSCSI, SMB, IPv6).
- Recommended kernel versions after updating:
- `linux-image-5.15.0-1046-xilinx-zynqmp 5.15.0-1046.50`
- `linux-image-xilinx-zynqmp 5.15.0.1046.50`

2. USN-7461-3 (Ubuntu 20.04 LTS):
- This update addresses vulnerabilities across multiple kernel subsystems, including GPU drivers, NFS, and Bluetooth.
- Recommended kernel versions:
- `linux-image-5.4.0-1062-xilinx-zynqmp 5.4.0-1062.66`
- `linux-image-xilinx-zynqmp 5.4.0.1062.62`

Update Instructions

To apply these updates, users should perform a standard system update. After the update, a system reboot is necessary to implement the changes. It is crucial to note that due to an ABI change, users may need to recompile and reinstall any third-party kernel modules previously installed.

Extended Context

These updates are critical for maintaining the security and stability of systems using the Xilinx ZynqMP processors. As cyber threats increase in sophistication, timely updates help mitigate risks associated with vulnerabilities. Users are encouraged to regularly check for updates and refer to the provided security notices for detailed information on vulnerabilities and fixes.

For further details and specific CVE references, please visit the Ubuntu security notices:
- [USN-7475-1](https://ubuntu.com/security/notices/USN-7475-1)
- [USN-7461-3](https://ubuntu.com/security/notices/USN-7461-3)

By staying up-to-date with security patches, users can better protect their systems against emerging threats

Linux kernel (Xilinx ZynqMP) updates for Ubuntu

Security updates for Ubuntu Linux 20.04 LTS have been issued, targeting vulnerabilities in the Linux kernel for Xilinx ZynqMP processors:

[USN-7475-1] Linux kernel (Xilinx ZynqMP) vulnerabilities
[USN-7461-3] Linux kernel (Xilinx ZynqMP) vulnerabilities

Linux kernel (Xilinx ZynqMP) updates for Ubuntu @ Linux Compatible