SB2023062969 - Ubuntu update for linux

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Main Vulnerability Database SB2023062969

SB2023062969 - Ubuntu update for linux

Published: June 29, 2023

Security Bulletin ID SB2023062969
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Improper locking (CVE-ID: CVE-2023-2430)

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

The vulnerability exists due to improper locking within the io_uring subsystem in Linux kernel when IOPOLL mode is being used. A local user can crash the kernel.


2) Out-of-bounds write (CVE-ID: CVE-2023-35788)

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

The vulnerability exists due to a boundary error within the fl_set_geneve_opt() function in net/sched/cls_flower.c in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References