[USN-5544-1] Linux kernel vulnerabilities


========================================================================== Ubuntu Security Notice USN-5544-1 August 02, 2022
linux, linux-hwe-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities ==========================================================================
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-lowlatency: Linux low latency kernel – linux-hwe-5.15: Linux hardware enablement (HWE) kernel – linux-lowlatency-hwe-5.15: Linux low latency kernel
Details:
It was discovered that the Atheros ath9k wireless device driver in the Linux kernel did not properly handle some error conditions, leading to 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-2022-1679)
Felix Fu discovered that the Sun RPC implementation in the Linux kernel did not properly handle socket states, leading to a use-after-free vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-28893)
Arthur Mongodin discovered that the netfilter subsystem in the Linux kernel did not properly perform data validation. A local attacker could use this to escalate privileges in certain situations. (CVE-2022-34918)
Minh Yuan discovered that the floppy disk driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1652)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04 LTS: linux-image-5.15.0-43-generic 5.15.0-43.46 linux-image-5.15.0-43-generic-64k 5.15.0-43.46 linux-image-5.15.0-43-generic-lpae 5.15.0-43.46 linux-image-5.15.0-43-lowlatency 5.15.0-43.46 linux-image-5.15.0-43-lowlatency-64k 5.15.0-43.46 linux-image-generic 5.15.0.43.44 linux-image-generic-64k 5.15.0.43.44 linux-image-generic-64k-hwe-22.04 5.15.0.43.44 linux-image-generic-hwe-22.04 5.15.0.43.44 linux-image-generic-lpae 5.15.0.43.44 linux-image-generic-lpae-hwe-22.04 5.15.0.43.44 linux-image-lowlatency 5.15.0.43.41 linux-image-lowlatency-64k 5.15.0.43.41 linux-image-lowlatency-64k-hwe-22.04 5.15.0.43.41 linux-image-lowlatency-hwe-22.04 5.15.0.43.41 linux-image-oem-20.04 5.15.0.43.44 linux-image-virtual 5.15.0.43.44 linux-image-virtual-hwe-22.04 5.15.0.43.44
Ubuntu 20.04 LTS: linux-image-5.15.0-43-generic 5.15.0-43.46~20.04.1 linux-image-5.15.0-43-generic-64k 5.15.0-43.46~20.04.1 linux-image-5.15.0-43-generic-lpae 5.15.0-43.46~20.04.1 linux-image-5.15.0-43-lowlatency 5.15.0-43.46~20.04.1 linux-image-5.15.0-43-lowlatency-64k 5.15.0-43.46~20.04.1 linux-image-generic-64k-hwe-20.04 5.15.0.43.46~20.04.14 linux-image-generic-hwe-20.04 5.15.0.43.46~20.04.14 linux-image-generic-lpae-hwe-20.04 5.15.0.43.46~20.04.14 linux-image-lowlatency-64k-hwe-20.04 5.15.0.43.46~20.04.13 linux-image-lowlatency-hwe-20.04 5.15.0.43.46~20.04.13 linux-image-virtual-hwe-20.04 5.15.0.43.46~20.04.14
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-5544-1 CVE-2022-1652, CVE-2022-1679, CVE-2022-28893, CVE-2022-34918
Package Information: launchpad.net/ubuntu/+source/linux/5.15.0-43.46 launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-43.46 launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-43.46~20.04.1 launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-43.46~20.04.1