========================================================================== Ubuntu Security Notice USN-7758-4 September 19, 2025
linux-oracle-6.8 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: The system could be made to crash or run programs as an administrator. Software Description: - linux-oracle-6.8: Linux kernel for Oracle Cloud systems Details: It was discovered that the AF_UNIX socket garbage collection implementation in Ubuntu Noble's 6.8 kernel did not properly handle out-of-band (OOB) messages, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS linux-image-6.8.0-1035-oracle 6.8.0-1035.36~22.04.1 linux-image-6.8.0-1035-oracle-64k 6.8.0-1035.36~22.04.1 linux-image-oracle 6.8.0-1035.36~22.04.1 linux-image-oracle-6.8 6.8.0-1035.36~22.04.1 linux-image-oracle-64k 6.8.0-1035.36~22.04.1 linux-image-oracle-64k-6.8 6.8.0-1035.36~22.04.1 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-7758-4 https://ubuntu.com/security/notices/USN-7758-3 https://ubuntu.com/security/notices/USN-7758-2 https://ubuntu.com/security/notices/USN-7758-1 https://launchpad.net/bugs/2121515 Package Information: https://launchpad.net/ubuntu/+source/linux-oracle-6.8/6.8.0-1035.36~22.04.1
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