SB2026012805 - Red Hat Enterprise Linux 9 update for kernel 

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Main Vulnerability Database SB2026012805

SB2026012805 - Red Hat Enterprise Linux 9 update for kernel

Published: January 28, 2026

Security Bulletin ID SB2026012805
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) Out-of-bounds read (CVE-ID: CVE-2023-53034)

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 switchtec_ntb_mw_set_trans() function in drivers/ntb/hw/mscc/ntb_hw_switchtec.c. A local user can perform a denial of service (DoS) attack.


2) Input validation error (CVE-ID: CVE-2025-37789)

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

The vulnerability exists due to improper input validation within the validate_set() function in net/openvswitch/flow_netlink.c. A local user can perform a denial of service (DoS) attack.


3) Double free (CVE-ID: CVE-2025-37819)

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

The vulnerability exists due to a double free error within the gicv2m_of_init() function in drivers/irqchip/irq-gic-v2m.c. A local user can perform a denial of service (DoS) attack.


4) Use-after-free (CVE-ID: CVE-2025-40258)

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

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


Remediation

Install update from vendor's website.

References