SB2022031732 - Fedora 34 update for kernel

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Main Vulnerability Database SB2022031732

SB2022031732 - Fedora 34 update for kernel

Published: March 17, 2022

Security Bulletin ID SB2022031732
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2022-0995)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the Linux kernel’s watch_queue event notification subsystem. A local user can run a specially crafted program to trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


2) 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.


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.


Remediation

Install update from vendor's website.

References