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Ubuntu Security Notice USN-5390-1
Ubuntu Security Notice 5390-1 - David Bouman discovered that the netfilter subsystem in the Linux kernel did not properly validate passed user register indices. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. David Bouman discovered that the netfilter subsystem in the Linux kernel did not initialize memory in some situations. A local attacker could use this to expose sensitive information.
==========================================================================Ubuntu Security Notice USN-5390-1April 26, 2022linux, linux-gcp, linux-ibm, linux-lowlatency vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTSSummary:Several security issues were fixed in the Linux kernel.Software Description:- linux: Linux kernel- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems- linux-ibm: Linux kernel for IBM cloud systems- linux-lowlatency: Linux low latency kernelDetails:David Bouman discovered that the netfilter subsystem in the Linux kerneldid not properly validate passed user register indices. A local attackercould use this to cause a denial of service or possibly execute arbitrarycode. (CVE-2022-1015)David Bouman discovered that the netfilter subsystem in the Linux kerneldid not initialize memory in some situations. A local attacker could usethis to expose sensitive information (kernel memory). (CVE-2022-1016)It was discovered that the ST21NFCA NFC driver in the Linux kernel did notproperly validate the size of certain data in EVT_TRANSACTION events. Aphysically proximate attacker could use this to cause a denial of service(system crash) or possibly execute arbitrary code. (CVE-2022-26490)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS: linux-image-5.15.0-1003-ibm 5.15.0-1003.3 linux-image-5.15.0-1004-gcp 5.15.0-1004.7 linux-image-5.15.0-27-generic 5.15.0-27.28 linux-image-5.15.0-27-generic-64k 5.15.0-27.28 linux-image-5.15.0-27-generic-lpae 5.15.0-27.28 linux-image-5.15.0-27-lowlatency 5.15.0-27.28 linux-image-5.15.0-27-lowlatency-64k 5.15.0-27.28 linux-image-gcp 5.15.0.1004.5 linux-image-generic 5.15.0.27.30 linux-image-generic-64k 5.15.0.27.30 linux-image-generic-lpae 5.15.0.27.30 linux-image-ibm 5.15.0.1003.4 linux-image-lowlatency 5.15.0.27.28 linux-image-lowlatency-64k 5.15.0.27.28 linux-image-oem-20.04 5.15.0.27.30 linux-image-virtual 5.15.0.27.30After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall 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 performthis as well.References: https://ubuntu.com/security/notices/USN-5390-1 CVE-2022-1015, CVE-2022-1016, CVE-2022-26490Package Information: https://launchpad.net/ubuntu/+source/linux/5.15.0-27.28 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1004.7 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1003.3 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-27.28