SB2024020806 - Ubuntu update for linux 

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2024020806

SB2024020806 - Ubuntu update for linux

Published: February 8, 2024

Security Bulletin ID SB2024020806
Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Deadlock (CVE-ID: CVE-2023-34324)

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0).


2) Use-after-free (CVE-ID: CVE-2023-35827)

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

The vulnerability exists due to a use-after-free error within the ravb_remove in drivers/net/ethernet/renesas/ravb_main.c. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.


3) Out-of-bounds write (CVE-ID: CVE-2023-45863)

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

The vulnerability exists due to a boundary error within the fill_kobj_path() function in lib/kobject.c. A local user can can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


4) NULL pointer dereference (CVE-ID: CVE-2023-46343)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the send_acknowledge() function in net/nfc/nci/spi.c. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References