[USN-5390-2] Linux kernel (Raspberry Pi) vulnerabilities


========================================================================== Ubuntu Security Notice USN-5390-2 May 03, 2022
linux-raspi vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 22.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: – linux-raspi: Linux kernel for Raspberry Pi systems
Details:
David Bouman discovered that the netfilter subsystem in the Linux kernel did not properly validate passed user register indices. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-1015)
David Bouman discovered that the netfilter subsystem in the Linux kernel did not initialize memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-1016)
It was discovered that the ST21NFCA NFC driver in the Linux kernel did not properly validate the size of certain data in EVT_TRANSACTION events. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-26490)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04 LTS: linux-image-5.15.0-1006-raspi 5.15.0-1006.6 linux-image-5.15.0-1006-raspi-nolpae 5.15.0-1006.6 linux-image-raspi 5.15.0.1006.6 linux-image-raspi-nolpae 5.15.0.1006.6
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-5390-2 ubuntu.com/security/notices/USN-5390-1 CVE-2022-1015, CVE-2022-1016, CVE-2022-26490
Package Information: launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1006.6