SB2022042731 - Red Hat Enterprise Linux 8 update for kernel

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Main Vulnerability Database SB2022042731

SB2022042731 - Red Hat Enterprise Linux 8 update for kernel

Published: April 27, 2022 Updated: June 7, 2024

Security Bulletin ID SB2022042731
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) Heap-based buffer overflow (CVE-ID: CVE-2022-25636)

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

The vulnerability exists due to a boundary error in net/netfilter/nf_dup_netdev.c in the Linux kernel, related to nf_tables_offload. A local user can trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.


2) Use-after-free (CVE-ID: CVE-2021-4028)

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

The vulnerability exists due to a use-after-free error in the RDMA listen() function in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.



Remediation

Install update from vendor's website.

References