[USN-5295-2] Linux kernel vulnerabilities

========================================================================== Ubuntu Security Notice USN-5295-2 February 22, 2022
linux, linux-aws, linux-gcp, linux-kvm, linux-oracle, linux-raspi vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10
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-raspi: Linux kernel for Raspberry Pi systems
Details:
It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-22600)
Jann Horn discovered a race condition in the Unix domain socket implementation in the Linux kernel that could result in a read-after-free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4083)
Kirill Tkhai discovered that the XFS file system implementation in the Linux kernel did not calculate size correctly when pre-allocating space in some situations. A local attacker could use this to expose sensitive information. (CVE-2021-4155)
Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in the Linux kernel did not perform a GPU TLB flush in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-0330)
It was discovered that the VMware Virtual GPU driver in the Linux kernel did not properly handle certain failure conditions, leading to a stale entry in the file descriptor table. A local attacker could use this to expose sensitive information or possibly gain administrative privileges. (CVE-2022-22942)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: linux-image-5.13.0-1013-kvm 5.13.0-1013.14 linux-image-5.13.0-1015-gcp 5.13.0-1015.18 linux-image-5.13.0-1017-raspi 5.13.0-1017.19 linux-image-5.13.0-1017-raspi-nolpae 5.13.0-1017.19 linux-image-5.13.0-1018-oracle 5.13.0-1018.22 linux-image-5.13.0-30-generic 5.13.0-30.33 linux-image-5.13.0-30-generic-64k 5.13.0-30.33 linux-image-5.13.0-30-generic-lpae 5.13.0-30.33 linux-image-5.13.0-30-lowlatency 5.13.0-30.33 linux-image-aws 5.13.0.1014.15 linux-image-gcp 5.13.0.1015.14 linux-image-generic 5.13.0.30.40 linux-image-generic-64k 5.13.0.30.40 linux-image-generic-lpae 5.13.0.30.40 linux-image-gke 5.13.0.1015.14 linux-image-kvm 5.13.0.1013.13 linux-image-lowlatency 5.13.0.30.40 linux-image-oem-20.04 5.13.0.30.40 linux-image-oracle 5.13.0.1018.18 linux-image-raspi 5.13.0.1017.22 linux-image-raspi-nolpae 5.13.0.1017.22 linux-image-virtual 5.13.0.30.40
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: ubuntu.com/security/notices/USN-5295-2 ubuntu.com/security/notices/USN-5295-1 CVE-2021-22600, CVE-2021-4083, CVE-2021-4155, CVE-2022-0330, CVE-2022-22942
Package Information: launchpad.net/ubuntu/+source/linux/5.13.0-30.33 launchpad.net/ubuntu/+source/linux-aws/5.13.0-1014.15 launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1015.18 launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1013.14 launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1018.22 launchpad.net/ubuntu/+source/linux-raspi/5.13.0-1017.19