========================================================================== Ubuntu Security Notice USN-5577-1 August 24, 2022
linux-oem-5.14 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-oem-5.14: Linux kernel for OEM systems Details: Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe) Ethernet driver for the Linux kernel performed insufficient control flow management. A local attacker could possibly use this to cause a denial of service. (CVE-2021-33061) It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.14.0-1049-oem 5.14.0-1049.56 linux-image-oem-20.04 5.14.0.1049.45 linux-image-oem-20.04b 5.14.0.1049.45 linux-image-oem-20.04c 5.14.0.1049.45 linux-image-oem-20.04d 5.14.0.1049.45 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-5577-1 CVE-2021-33061, CVE-2021-33655 Package Information: https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1049.56
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