========================================================================== Ubuntu Security Notice USN-7234-4 February 12, 2025
linux-aws vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-aws: Linux kernel for Amazon Web Services (AWS) systems Details: Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux kernel did not properly handle locking for rings with IOPOLL, leading to a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-21400) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - TTY drivers; - Netfilter; - Network traffic control; - VMware vSockets driver; (CVE-2024-53141, CVE-2024-53103, CVE-2024-40967, CVE-2024-53164) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.4.0-1139-aws 5.4.0-1139.149 linux-image-aws-lts-20.04 5.4.0.1139.136 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-7234-4 https://ubuntu.com/security/notices/USN-7234-3 https://ubuntu.com/security/notices/USN-7234-2 https://ubuntu.com/security/notices/USN-7234-1 CVE-2023-21400, CVE-2024-40967, CVE-2024-53103, CVE-2024-53141, CVE-2024-53164 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1139.149
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