Ubuntu 6339-1: Linux kernel vulnerabilities
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: 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-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-nvidia: Linux kernel for NVIDIA systems - linux-hwe-5.15: Linux hardware enablement (HWE) kernel - linux-lowlatency-hwe-5.15: Linux low latency kernel Details: It was discovered that the NTFS file system implementation in the Linux kernel did not properly validate MFT flags in certain situations. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-48425) Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-21255) It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-2898) It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-31084) Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212) It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes in certain operations, leading to an out-of- bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38426, CVE-2023-38428) It was discovered that the KSMBD implementation in the Linux kernel did not properly calculate the size of certain buffers. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-38429)
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1032-nvidia 5.15.0-1032.32 linux-image-5.15.0-1032-nvidia-lowlatency 5.15.0-1032.32 linux-image-5.15.0-1037-ibm 5.15.0-1037.40 linux-image-5.15.0-1041-gcp 5.15.0-1041.49 linux-image-5.15.0-1041-kvm 5.15.0-1041.46 linux-image-5.15.0-83-generic 5.15.0-83.92 linux-image-5.15.0-83-generic-64k 5.15.0-83.92 linux-image-5.15.0-83-generic-lpae 5.15.0-83.92 linux-image-5.15.0-83-lowlatency 5.15.0-83.92 linux-image-5.15.0-83-lowlatency-64k 5.15.0-83.92 linux-image-gcp-lts-22.04 5.15.0.1041.37 linux-image-generic 5.15.0.83.80 linux-image-generic-64k 5.15.0.83.80 linux-image-generic-lpae 5.15.0.83.80 linux-image-ibm 5.15.0.1037.33 linux-image-kvm 5.15.0.1041.37 linux-image-lowlatency 5.15.0.83.85 linux-image-lowlatency-64k 5.15.0.83.85 linux-image-nvidia 5.15.0.1032.32 linux-image-nvidia-lowlatency 5.15.0.1032.32 linux-image-virtual 5.15.0.83.80 Ubuntu 20.04 LTS: linux-image-5.15.0-83-generic 5.15.0-83.92~20.04.1 linux-image-5.15.0-83-generic-64k 5.15.0-83.92~20.04.1 linux-image-5.15.0-83-generic-lpae 5.15.0-83.92~20.04.1 linux-image-5.15.0-83-lowlatency 5.15.0-83.92~20.04.1 linux-image-5.15.0-83-lowlatency-64k 5.15.0-83.92~20.04.1 linux-image-generic-64k-hwe-20.04 5.15.0.83.92~20.04.41 linux-image-generic-hwe-20.04 5.15.0.83.92~20.04.41 linux-image-generic-lpae-hwe-20.04 5.15.0.83.92~20.04.41 linux-image-lowlatency-64k-hwe-20.04 5.15.0.83.92~20.04.38 linux-image-lowlatency-hwe-20.04 5.15.0.83.92~20.04.38 linux-image-oem-20.04 5.15.0.83.92~20.04.41 linux-image-oem-20.04b 5.15.0.83.92~20.04.41 linux-image-oem-20.04c 5.15.0.83.92~20.04.41 linux-image-oem-20.04d 5.15.0.83.92~20.04.41 linux-image-virtual-hwe-20.04 5.15.0.83.92~20.04.41 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-6339-1
CVE-2022-48425, CVE-2023-21255, CVE-2023-2898, CVE-2023-31084,
CVE-2023-3212, CVE-2023-38426, CVE-2023-38428, CVE-2023-38429
Package Information
https://launchpad.net/ubuntu/+source/linux/5.15.0-83.92 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1041.49 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1037.40 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1041.46 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-83.92 https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1032.32 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-83.92~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-83.92~20.04.1
