SB2026011212 - Red Hat Enterprise Linux 8 update for kernel 

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Main Vulnerability Database SB2026011212

SB2026011212 - Red Hat Enterprise Linux 8 update for kernel

Published: January 12, 2026

Security Bulletin ID SB2026011212
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2025-39993)

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

The vulnerability exists due to a use-after-free error within the display_open(), send_packet(), vfd_write(), lcd_write() and imon_disconnect() functions in drivers/media/rc/imon.c. A local user can escalate privileges on the system.


2) NULL pointer dereference (CVE-ID: CVE-2025-40240)

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

The vulnerability exists due to NULL pointer dereference within the sctp_inq_pop() function in net/sctp/inqueue.c. A local user can perform a denial of service (DoS) attack.


3) Use-after-free (CVE-ID: CVE-2025-68285)

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

The vulnerability exists due to a use-after-free error within the monmap_show() and osdmap_show() functions in net/ceph/debugfs.c. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

References