SB2022060828 - Ubuntu update for linux
Published: June 8, 2022 Updated: June 18, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 21 secuirty vulnerabilities.
1) Insufficient verification of data authenticity (CVE-ID: CVE-2021-3772)
The vulnerability allows a remote attacker to perform a denial of service attack (DoS) on the target system.The vulnerability exists due to insufficient verification of data authenticity in the Linux SCTP stack. A remote attacker can exploit this vulnerability to perform a denial of service attack.
2) Security restrictions bypass (CVE-ID: CVE-2021-4197)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to missing permissions checks within the cgroups (control groups) functionality of Linux Kernel when writing into a file descriptor. A local low privileged process can trick a higher privileged parent process into writing arbitrary data into files, which can result in denial of service or privileges escalation.
3) Use-after-free (CVE-ID: CVE-2022-1011)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the write() function of FUSE filesystem. A local user can retireve (partial) /etc/shadow hashes and execute arbitrary code with elevated privileges.
4) Out-of-bounds write (CVE-ID: CVE-2022-1158)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due the KVM implementation in Linux kernel does not properly perform guest page table updates in some situations. A remote user on the guest operating system can trigger memory corruption and perform a denial of service attack against the host OS.
5) Use-after-free (CVE-ID: CVE-2022-1198)
The vulnerability allows a local user to perform a denial of service attack.
The vulnerability exists due to a use-after-free error in the drivers/net/hamradio/6pack.c. A local user can perform a denial of service (DoS) attack by simulating Amateur Radio.
6) Information disclosure (CVE-ID: CVE-2022-1353)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the pfkey_register function in net/key/af_key.c in the Linux kernel. A local user can gain unauthorized access to kernel memory, leading to a system crash or a leak of internal kernel information.
7) NULL pointer dereference (CVE-ID: CVE-2022-1516)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference error in the Linux kernel’s X.25 set of standardized network protocols functionality. A local user can terminate session using a simulated Ethernet card and perform a denial of service (DoS) attack.
8) Use-after-free (CVE-ID: CVE-2022-1966)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can trigger use-after-free error to escalate privileges on the system.
9) Improper access control (CVE-ID: CVE-2022-21499)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.
10) Race condition (CVE-ID: CVE-2022-23036)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the blkfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
11) Race condition (CVE-ID: CVE-2022-23037)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
12) Race condition (CVE-ID: CVE-2022-23038)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the scsifront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
13) Race condition (CVE-ID: CVE-2022-23039)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the gntalloc ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
14) Race condition (CVE-ID: CVE-2022-23040)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in the xenbus ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
15) Race condition (CVE-ID: CVE-2022-23041)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition in blkfront, netfront, scsifront, usbfront, dmabuf, xenbus, 9p, kbdfront, and pvcalls ring buffers. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
16) Reachable Assertion (CVE-ID: CVE-2022-23042)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to reachable assertion in the netfront ring buffer. A malicious backend can exploit the race condition and read or write data or perform a denial of service attack.
17) Release of invalid pointer or reference (CVE-ID: CVE-2022-24958)
The vulnerability allows remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to release of illegal memory vulnerability in the drivers/usb/gadget/legacy/inode.c. A remote attacker can send specially crafted data and perform a denial of service (DoS) attack.
18) Use-after-free (CVE-ID: CVE-2022-26966)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error in drivers/net/usb/sr9700.c in the Linux kernel. A remote attacker can pass specially crafted data and obtain sensitive information from heap memory.
19) Memory leak (CVE-ID: CVE-2022-28356)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in net/llc/af_llc.c component. A remote attacker can force the system to leak memory and perform denial of service attack.
20) Double Free (CVE-ID: CVE-2022-28389)
The vulnerability allows a local user to execute arbitrary code with elevated privileges.
The vulnerability exists due to boundary error in mcba_usb_start_xmit in drivers/net/can/usb/mcba_usb.c. A local user can pass specially crafted data to the application, trigger double free error and execute arbitrary code with elevated privileges.
21) Double Free (CVE-ID: CVE-2022-28390)
The vulnerability allows a local user to execute arbitrary code with elevated privileges.
The vulnerability exists due to boundary error in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c. A local user can pass specially crafted data to the application, trigger double free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.