SB2023120619 - Ubuntu update for linux-oem-6.1

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Main Vulnerability Database SB2023120619

SB2023120619 - Ubuntu update for linux-oem-6.1

Published: December 6, 2023 Updated: May 13, 2024

Security Bulletin ID SB2023120619
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Improper access control (CVE-ID: CVE-2023-46813)

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

The vulnerability exists due to improper access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses. A local user can gain arbitrary write access to kernel memory and execute arbitrary code with elevated privileges.


2) NULL pointer dereference (CVE-ID: CVE-2023-46862)

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 io_uring_show_fdinfo() function in io_uring/fdinfo.c. A local user can trigger a race with SQ thread exit and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References