SB2026040827 - Red Hat Enterprise Linux 9 update for kernel

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Main Vulnerability Database SB2026040827

SB2026040827 - Red Hat Enterprise Linux 9 update for kernel

Published: April 8, 2026

Security Bulletin ID SB2026040827
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-2025-38180)

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

The vulnerability exists due to a use-after-free error within the lec_itf_walk(), lec_seq_start() and lec_seq_stop() functions in net/atm/lec.c. A local user can escalate privileges on the system.


2) Double free (CVE-ID: CVE-2025-38206)

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 exfat_free_upcase_table() function in fs/exfat/nls.c. A local user can perform a denial of service (DoS) attack.


3) Use-after-free (CVE-ID: CVE-2026-23001)

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

The vulnerability exists due to a use-after-free error within the macvlan_hash_lookup_source(), macvlan_hash_add_source(), macvlan_hash_add(), macvlan_flush_sources(), macvlan_forward_source() and macvlan_fill_info_macaddr() functions in drivers/net/macvlan.c. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

References