SB2023060312 - openEuler 20.03 LTS SP1 update for kernel

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Main Vulnerability Database SB2023060312

SB2023060312 - openEuler 20.03 LTS SP1 update for kernel

Published: June 3, 2023

Security Bulletin ID SB2023060312
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) Use-after-free (CVE-ID: CVE-2020-36694)

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

The vulnerability exists due to a use-after-free error in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. A local user with CAP_NET_ADMIN capability in an unprivileged namespace can execute arbitrary code with elevated privileges.


2) Use-after-free (CVE-ID: CVE-2022-1280)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a use-after-free error within the drm_lease_held() function in drivers/gpu/drm/drm_lease.c in the Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and crash the kernel or gain access to sensitive information.



Remediation

Install update from vendor's website.

References