SB2022051831 - Ubuntu update for linux
Published: May 18, 2022 Updated: October 19, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2021-26401)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application within LFENCE/JMP. A local user can gain unauthorized access to sensitive information on the system.
2) Use of uninitialized resource (CVE-ID: CVE-2022-20008)
The vulnerability allows a local application to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources within the mmc_blk_read_single() function in block.c. A local application can obtain potentially sensitive information from memory when reading from an SD card that triggers errors.
3) NULL pointer dereference (CVE-ID: CVE-2022-25258)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error drivers/usb/gadget/composite.c in the Linux kernel. The USB Gadget subsystem lacks certain validation of interface OS descriptor requests (ones with a large array index and ones associated with NULL function pointer retrieval). A local user can run a specially crafted program to trigger memory corruption and perform a denial of service (DoS) attack.
4) Exposure of Resource to Wrong Sphere (CVE-ID: CVE-2022-25375)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access restrictions in drivers/usb/gadget/function/rndis.c in the Linux kernel. The RNDIS USB gadget lacks validation of the size of the RNDIS_MSG_SET command. A local user can run a specially crafted program to gain access to kernel memory.
5) Buffer overflow (CVE-ID: CVE-2022-26490)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the st21nfca_connectivity_event_received() function in drivers/nfc/st21nfca/se.c in Linux kernel. A local user can run a specially crafted program to trigger buffer overflow and execute arbitrary code with elevated privileges.
6) 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.
7) Improper Validation of Array Index (CVE-ID: CVE-2022-27223)
The vulnerability allows a remote attacker to execute arbitrary code with elevated privileges.The vulnerability exists due to improper validation of array index in drivers/usb/gadget/udc/udc-xilinx.c in the Linux kernel. A remote attacker can send specially crafted data to the system and execute arbitrary code with elevated privileges.
8) Double Free (CVE-ID: CVE-2022-29156)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in drivers/infiniband/ulp/rtrs/rtrs-clt.c in the Linux kernel. A remote attacker can pass specially crafted data to the application, trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.