SB2026020459 - Red Hat Enterprise Linux 9 update for kernel-rt

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026020459

SB2026020459 - Red Hat Enterprise Linux 9 update for kernel-rt

Published: February 4, 2026

Security Bulletin ID SB2026020459
Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2025-40248)

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

The vulnerability exists due to a use-after-free error within the vsock_connect() function in net/vmw_vsock/af_vsock.c. A local user can escalate privileges on the system.


2) Use-after-free (CVE-ID: CVE-2023-53751)

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

The vulnerability exists due to a use-after-free error within the cifs_chan_is_iface_active() and cifs_try_adding_channels() functions in fs/cifs/sess.c. A local user can escalate privileges on the system.


3) Out-of-bounds read (CVE-ID: CVE-2025-68301)

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

The vulnerability exists due to an out-of-bounds read error within the aq_ring_rx_clean() function in drivers/net/ethernet/aquantia/atlantic/aq_ring.c. A local user can perform a denial of service (DoS) attack.


4) Integer overflow (CVE-ID: CVE-2022-50865)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer overflow within the tcp_add_backlog() function in net/ipv4/tcp_ipv4.c. A local user can execute arbitrary code.


Remediation

Install update from vendor's website.

References