USN-5791-3: Linux kernel (Azure) vulnerabilities
It was discovered that a race condition existed in the Android Binder IPC subsystem in the Linux kernel, 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-2022-20421) David Leadbeater discovered that the netfilter IRC protocol tracking implementation in the Linux Kernel incorrectly handled certain message payloads in some situations. A remote attacker could possibly use this to cause a denial of service or bypass firewall filtering. (CVE-2022-2663) It was discovered that the Intel 740 frame buffer driver in the Linux kernel contained a divide by zero vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3061) It was discovered that the sound subsystem in the Linux kernel contained a race condition in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3303) Gwnaun Jung discovered that the SFB packet scheduling implementation 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 execute arbitrary code. (CVE-2022-3586) It was discovered that the NILFS2 file system implementation in the Linux kernel did not properly deallocate memory in certain error conditions. An attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-3646) Hyunwoo Kim discovered that an integer overflow vulnerability existed in the PXA3xx graphics driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-39842) It was discovered that a race condition existed in the EFI capsule loader driver in the Linux kernel, 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-2022-40307) Zheng Wang and Zhuorao Yang discovered that the RealTek RTL8712U wireless driver 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 execute arbitrary code. (CVE-2022-4095) It was discovered that the USB monitoring (usbmon) component in the Linux kernel did not properly set permissions on memory mapped in to user space processes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43750) Jann Horn discovered a race condition existed in the Linux kernel when unmapping VMAs in certain situations, resulting in possible use-after-free vulnerabilities. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-39188)
Affected Software
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
What is the vulnerability ID for this Linux kernel vulnerability?
The vulnerability ID for this Linux kernel vulnerability is CVE-2022-20421.
What is the impact of the vulnerability (CVE-2022-20421) on the affected systems?
The vulnerability (CVE-2022-20421) can be exploited by a local attacker to cause a denial of service (system crash) or potentially execute arbitrary code.
Which Linux kernel versions are affected by this vulnerability (CVE-2022-20421)?
The Linux kernel versions affected by this vulnerability (CVE-2022-20421) are 5.4.0.1100.106+cvm1.35, 5.4.0-1100.106+cvm1.1, 5.4.0.1100.73, and 5.4.0-1100.106~18.04.1.
Which Ubuntu versions are affected by this Linux kernel vulnerability (CVE-2022-20421)?
The Ubuntu versions affected by this Linux kernel vulnerability (CVE-2022-20421) are 20.04 and 18.04.
Where can I find more information about this Linux kernel vulnerability (CVE-2022-20421)?
You can find more information about this Linux kernel vulnerability (CVE-2022-20421) on the Ubuntu Security website.