SB2025072821 - Red Hat Enterprise Linux 8 update for kernel-rt

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2025072821

SB2025072821 - Red Hat Enterprise Linux 8 update for kernel-rt

Published: July 28, 2025

Security Bulletin ID SB2025072821
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2025-21905)

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

The vulnerability exists due to memory corruption within the iwl_parse_tlv_firmware() function in drivers/net/wireless/intel/iwlwifi/iwl-drv.c. A local user can perform a denial of service (DoS) attack.


2) Input validation error (CVE-ID: CVE-2025-21919)

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

The vulnerability exists due to improper input validation within the child_cfs_rq_on_list() function in kernel/sched/fair.c. A local user can perform a denial of service (DoS) attack.


3) NULL pointer dereference (CVE-ID: CVE-2022-49977)

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

The vulnerability exists due to NULL pointer dereference within the ftrace_startup() function in kernel/trace/ftrace.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References