--- title: 'USN-6252-1: Linux kernel vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-6252-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-6252-1 --- # USN-6252-1: Linux kernel vulnerabilities Publication date 26 July 2023 Overview Several security issues were fixed in the Linux kernel. Releases [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) [16.04 LTS](https://ubuntu.com/security/notices?release=xenial) [14.04 LTS](https://ubuntu.com/security/notices?release=trusty) --- Open side navigation ## Packages * [linux](https://ubuntu.com/security/cves?package=linux) - Linux kernel * [linux-aws](https://ubuntu.com/security/cves?package=linux-aws) - Linux kernel for Amazon Web Services (AWS) systems * [linux-aws-hwe](https://ubuntu.com/security/cves?package=linux-aws-hwe) - Linux kernel for Amazon Web Services (AWS-HWE) systems * [linux-azure](https://ubuntu.com/security/cves?package=linux-azure) - Linux kernel for Microsoft Azure Cloud systems * [linux-azure-4.15](https://ubuntu.com/security/cves?package=linux-azure-4.15) - Linux kernel for Microsoft Azure Cloud systems * [linux-dell300x](https://ubuntu.com/security/cves?package=linux-dell300x) - Linux kernel for Dell 300x platforms * [linux-gcp](https://ubuntu.com/security/cves?package=linux-gcp) - Linux kernel for Google Cloud Platform (GCP) systems * [linux-gcp-4.15](https://ubuntu.com/security/cves?package=linux-gcp-4.15) - Linux kernel for Google Cloud Platform (GCP) systems * [linux-hwe](https://ubuntu.com/security/cves?package=linux-hwe) - Linux hardware enablement (HWE) kernel * [linux-kvm](https://ubuntu.com/security/cves?package=linux-kvm) - Linux kernel for cloud environments * [linux-oracle](https://ubuntu.com/security/cves?package=linux-oracle) - Linux kernel for Oracle Cloud systems * [linux-snapdragon](https://ubuntu.com/security/cves?package=linux-snapdragon) - Linux kernel for Qualcomm Snapdragon processors ## Details It was discovered that the ext4 file system implementation in the Linux kernel contained a use-after-free vulnerability. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). ([CVE-2022-1184](https://ubuntu.com/security/CVE-2022-1184)) It was discovered that the sound subsystem in the Linux kernel contained a race condition in some situations. A local attacker could use this to cause a denial of service (system crash). ([CVE-2022-3303](https://ubuntu.com/security/CVE-2022-3303)) It was discovered that a race condition existed in the btrfs file system implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. ([CVE-2023-1611](https://ubuntu.com/security/CVE-2023-1611)) It was discovered that the Xircom PCMCIA network device... --- Show more ## Update instructions After a standard system update you need to reboot your computer to make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) 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. The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 18.04 LTS bionic | [linux-image-4.15.0-1068-dell300x](https://launchpad.net/ubuntu/+source/linux-signed-dell300x) –  4.15.0-1068.73   Ubuntu Pro | | | | [linux-image-4.15.0-1122-oracle](https://launchpad.net/ubuntu/+source/linux-signed-oracle) –  4.15.0-1122.133   Ubuntu Pro | | | | [linux-image-4.15.0-1143-kvm](https://launchpad.net/ubuntu/+source/linux-kvm) –  4.15.0-1143.148   Ubuntu Pro | | | | [linux-image-4.15.0-1153-gcp](https://launchpad.net/ubuntu/+source/linux-signed-gcp-4.15) –  4.15.0-1153.170   Ubuntu Pro | | | | [linux-image-4.15.0-1153-snapdragon](https://launchpad.net/ubuntu/+source/linux-snapdragon) –  4.15.0-1153.163   Ubuntu Pro | | | | [linux-image-4.15.0-1159-aws](https://launchpad.net/ubuntu/+source/linux-signed-aws) –  4.15.0-1159.172   Ubuntu Pro | | | | [linux-image-4.15.0-1168-azure](https://launchpad.net/ubuntu/+source/linux-signed-azure-4.15) –  4.15.0-1168.183   Ubuntu Pro | | | | [linux-image-4.15.0-214-generic](https://launchpad.net/ubuntu/+source/linux-signed) –  4.15.0-214.225   Ubuntu Pro | | | | [linux-image-4.15.0-214-generic-lpae](https://launchpad.net/ubuntu/+source/linux) –  4.15.0-214.225   Ubuntu Pro | | | | [linux-image-4.15.0-214-lowlatency](https://launchpad.net/ubuntu/+source/linux-signed) –  4.15.0-214.225   Ubuntu Pro | | | | [linux-image-aws-lts-18.04](https://launchpad.net/ubuntu/+source/linux-meta-aws) –  4.15.0.1159.157   Ubuntu Pro | | | | [linux-image-azure-lts-18.04](https://launchpad.net/ubuntu/+source/linux-meta-azure-4.15) –  4.15.0.1168.136   Ubuntu Pro | | | | [linux-image-dell300x](https://launchpad.net/ubuntu/+source/linux-meta-dell300x) –  4.15.0.1068.67   Ubuntu Pro | | | | [linux-image-gcp-lts-18.04](https://launchpad.net/ubuntu/+source/linux-meta-gcp-4.15) –  4.15.0.1153.167   Ubuntu Pro | | | | [linux-image-generic](https://launchpad.net/ubuntu/+source/linux-meta) –  4.15.0.214.197   Ubuntu Pro | | | | [linux-image-generic-lpae](https://launchpad.net/ubuntu/+source/linux-meta) –  4.15.0.214.197   Ubuntu Pro | | | | [linux-image-kvm](https://launchpad.net/ubuntu/+source/linux-meta-kvm) –  4.15.0.1143.134   Ubuntu Pro | | | | [linux-image-lowlatency](https://launchpad.net/ubuntu/+source/linux-meta) –  4.15.0.214.197   Ubuntu Pro | | | | [linux-image-oracle-lts-18.04](https://launchpad.net/ubuntu/+source/linux-meta-oracle) –  4.15.0.1122.127   Ubuntu Pro | | | | [linux-image-snapdragon](https://launchpad.net/ubuntu/+source/linux-meta-snapdragon) –  4.15.0.1153.152   Ubuntu Pro | | | | [linux-image-virtual](https://launchpad.net/ubuntu/+source/linux-meta) –  4.15.0.214.197   Ubuntu Pro | | | | 16.04 LTS xenial | [linux-image-4.15.0-1122-oracle](https://launchpad.net/ubuntu/+source/linux-signed-oracle) –  4.15.0-1122.133~16.04.1   Ubuntu Pro | | | | [linux-image-4.15.0-1153-gcp](https://launchpad.net/ubuntu/+source/linux-signed-gcp) –  4.15.0-1153.170~16.04.1   Ubuntu Pro | | | | [linux-image-4.15.0-1159-aws](https://launchpad.net/ubuntu/+source/linux-signed-aws-hwe) –  4.15.0-1159.172~16.04.1   Ubuntu Pro | | | | [linux-image-4.15.0-1168-azure](https://launchpad.net/ubuntu/+source/linux-signed-azure) –  4.15.0-1168.183~16.04.1   Ubuntu Pro | | | | [linux-image-4.15.0-214-generic](https://launchpad.net/ubuntu/+source/linux-signed-hwe) –  4.15.0-214.225~16.04.1   Ubuntu Pro | | | | [linux-image-4.15.0-214-lowlatency](https://launchpad.net/ubuntu/+source/linux-signed-hwe) –  4.15.0-214.225~16.04.1   Ubuntu Pro | | | | [linux-image-aws-hwe](https://launchpad.net/ubuntu/+source/linux-meta-aws-hwe) –  4.15.0.1159.142   Ubuntu Pro | | | | [linux-image-azure](https://launchpad.net/ubuntu/+source/linux-meta-azure) –  4.15.0.1168.152   Ubuntu Pro | | | | [linux-image-gcp](https://launchpad.net/ubuntu/+source/linux-meta-gcp) –  4.15.0.1153.143   Ubuntu Pro | | | | [linux-image-generic-hwe-16.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe) –  4.15.0.214.199   Ubuntu Pro | | | | [linux-image-gke](https://launchpad.net/ubuntu/+source/linux-meta-gcp) –  4.15.0.1153.143   Ubuntu Pro | | | | [linux-image-lowlatency-hwe-16.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe) –  4.15.0.214.199   Ubuntu Pro | | | | [linux-image-oem](https://launchpad.net/ubuntu/+source/linux-meta-hwe) –  4.15.0.214.199   Ubuntu Pro | | | | [linux-image-oracle](https://launchpad.net/ubuntu/+source/linux-meta-oracle) –  4.15.0.1122.103   Ubuntu Pro | | | | [linux-image-virtual-hwe-16.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe) –  4.15.0.214.199   Ubuntu Pro | | | | 14.04 LTS trusty | [linux-image-4.15.0-1168-azure](https://launchpad.net/ubuntu/+source/linux-signed-azure) –  4.15.0-1168.183~14.04.1   Ubuntu Pro | | | | [linux-image-azure](https://launchpad.net/ubuntu/+source/linux-meta-azure) –  4.15.0.1168.134   Ubuntu Pro | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2023-35001](https://ubuntu.com/security/CVE-2023-35001) * [CVE-2023-3390](https://ubuntu.com/security/CVE-2023-3390) * [CVE-2023-3268](https://ubuntu.com/security/CVE-2023-3268) * [CVE-2023-3141](https://ubuntu.com/security/CVE-2023-3141) * [CVE-2023-3111](https://ubuntu.com/security/CVE-2023-3111) * [CVE-2023-3090](https://ubuntu.com/security/CVE-2023-3090) * [CVE-2023-2124](https://ubuntu.com/security/CVE-2023-2124) * [CVE-2023-1990](https://ubuntu.com/security/CVE-2023-1990) * [CVE-2023-1859](https://ubuntu.com/security/CVE-2023-1859) * [CVE-2023-1670](https://ubuntu.com/security/CVE-2023-1670) --- Show 3 more references ## Related notices id="usn" *Search* * [USN-6460-1](https://ubuntu.com/security/notices/USN-6460-1) * [USN-6397-1](https://ubuntu.com/security/notices/USN-6397-1) * [USN-6385-1](https://ubuntu.com/security/notices/USN-6385-1) * [USN-6357-1](https://ubuntu.com/security/notices/USN-6357-1) * [USN-6349-1](https://ubuntu.com/security/notices/USN-6349-1) * [USN-6347-1](https://ubuntu.com/security/notices/USN-6347-1) * [USN-6340-1](https://ubuntu.com/security/notices/USN-6340-1) * [USN-6340-2](https://ubuntu.com/security/notices/USN-6340-2) * [USN-6337-1](https://ubuntu.com/security/notices/USN-6337-1) * [USN-6332-1](https://ubuntu.com/security/notices/USN-6332-1) --- Show 58 more references --- Have additional questions? 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