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💡 Newskategorie: Unix Server
🔗 Quelle: usn.ubuntu.com
linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2, linux-raspi2-5.3 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm - Linux kernel for cloud environments
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-raspi2 - Linux kernel for Raspberry Pi 2
- linux-gcp-5.3 - Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe - Linux hardware enablement (HWE) kernel
- linux-oracle-5.3 - Linux kernel Oracle Cloud systems
- linux-raspi2-5.3 - Linux kernel for Raspberry Pi 2
Details
It was discovered that the IPMI message handler implementation in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19046)
Al Viro discovered that the vfs layer 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 expose sensitive information (kernel memory). (CVE-2020-8428)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- linux-image-5.3.0-1014-oracle - 5.3.0-1014.15
- linux-image-5.3.0-1015-kvm - 5.3.0-1015.16
- linux-image-5.3.0-1016-aws - 5.3.0-1016.17
- linux-image-5.3.0-1017-gcp - 5.3.0-1017.18
- linux-image-5.3.0-1022-raspi2 - 5.3.0-1022.24
- linux-image-5.3.0-46-generic - 5.3.0-46.38
- linux-image-5.3.0-46-generic-lpae - 5.3.0-46.38
- linux-image-5.3.0-46-lowlatency - 5.3.0-46.38
- linux-image-5.3.0-46-snapdragon - 5.3.0-46.38
- linux-image-aws - 5.3.0.1016.18
- linux-image-gcp - 5.3.0.1017.18
- linux-image-generic - 5.3.0.46.39
- linux-image-generic-lpae - 5.3.0.46.39
- linux-image-gke - 5.3.0.1017.18
- linux-image-kvm - 5.3.0.1015.17
- linux-image-lowlatency - 5.3.0.46.39
- linux-image-oracle - 5.3.0.1014.15
- linux-image-raspi2 - 5.3.0.1022.19
- linux-image-snapdragon - 5.3.0.46.39
- linux-image-virtual - 5.3.0.46.39
- Ubuntu 18.04 LTS
- linux-image-5.3.0-1014-oracle - 5.3.0-1014.15~18.04.1
- linux-image-5.3.0-1017-gcp - 5.3.0-1017.18~18.04.1
- linux-image-5.3.0-1022-raspi2 - 5.3.0-1022.24~18.04.1
- linux-image-5.3.0-46-generic - 5.3.0-46.38~18.04.1
- linux-image-5.3.0-46-generic-lpae - 5.3.0-46.38~18.04.1
- linux-image-5.3.0-46-lowlatency - 5.3.0-46.38~18.04.1
- linux-image-gcp-edge - 5.3.0.1017.16
- linux-image-generic-hwe-18.04 - 5.3.0.46.102
- linux-image-generic-lpae-hwe-18.04 - 5.3.0.46.102
- linux-image-lowlatency-hwe-18.04 - 5.3.0.46.102
- linux-image-oracle-edge - 5.3.0.1014.13
- linux-image-raspi2-hwe-18.04 - 5.3.0.1022.11
- linux-image-snapdragon-hwe-18.04 - 5.3.0.46.102
- linux-image-virtual-hwe-18.04 - 5.3.0.46.102
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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.