USN-5442-2: Linux kernel vulnerabilities
=========================================================================
Ubuntu Security Notice USN-5442-2
June 01, 2022
linux-gcp-5.4, linux-gkeop, linux-gkeop-5.4, linux-ibm-5.4, linux-oracle,
linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop-5.4: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems
Details:
Kyle Zeng discovered that the Network Queuing and Scheduling subsystem of
the Linux kernel did not properly perform reference counting in some
situations, leading to a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or execute
arbitrary code. (CVE-2022-29581)
Bing-Jhong Billy Jheng discovered that the io_uring subsystem in the Linux
kernel contained in integer overflow. A local attacker could use this to
cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1116)
Jann Horn discovered that the Linux kernel did not properly enforce seccomp
restrictions in some situations. A local attacker could use this to bypass
intended seccomp sandbox restrictions. (CVE-2022-30594)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1043-gkeop 5.4.0-1043.44
linux-image-5.4.0-1062-raspi 5.4.0-1062.70
linux-image-5.4.0-1073-oracle 5.4.0-1073.79
linux-image-gkeop 5.4.0.1043.46
linux-image-gkeop-5.4 5.4.0.1043.46
linux-image-oracle-lts-20.04 5.4.0.1073.73
linux-image-raspi 5.4.0.1062.96
linux-image-raspi2 5.4.0.1062.96
Ubuntu 18.04 LTS:
linux-image-5.4.0-1023-ibm 5.4.0-1023.25~18.04.1
linux-image-5.4.0-1043-gkeop 5.4.0-1043.44~18.04.1
linux-image-5.4.0-1062-raspi 5.4.0-1062.70~18.04.1
linux-image-5.4.0-1073-oracle 5.4.0-1073.79~18.04.1
linux-image-5.4.0-1075-gcp 5.4.0-1075.80~18.04.1
linux-image-gcp 5.4.0.1075.58
linux-image-gkeop-5.4 5.4.0.1043.44~18.04.42
linux-image-ibm 5.4.0.1023.39
linux-image-oracle 5.4.0.1073.79~18.04.52
linux-image-raspi-hwe-18.04 5.4.0.1062.63
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-5442-2
https://ubuntu.com/security/notices/USN-5442-1
CVE-2022-1116, CVE-2022-29581, CVE-2022-30594
Package Information:
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1043.44
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1073.79
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1062.70
https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1075.80~18.04.1
https://launchpad.net/ubuntu/+source/linux-gkeop-5.4/5.4.0-1043.44~18.04.1
https://launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1023.25~18.04.1
https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1073.79~18.04.1
https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1062.70~18.04.1
A Linux kernel security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.
