SB2026040602 - Red Hat Enterprise Linux 8 update for kernel

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Main Vulnerability Database SB2026040602

SB2026040602 - Red Hat Enterprise Linux 8 update for kernel

Published: April 6, 2026

Security Bulletin ID SB2026040602
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) NULL pointer dereference (CVE-ID: CVE-2024-26984)

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

The vulnerability exists due to NULL pointer dereference within the nv50_instobj_acquire() function in drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c. A local user can perform a denial of service (DoS) attack.


2) Use-after-free (CVE-ID: CVE-2026-23193)

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

The vulnerability exists due to a use-after-free error within the iscsit_dec_session_usage_count() function in drivers/target/iscsi/iscsi_target_util.c. A local user can escalate privileges on the system.


3) Use-after-free (CVE-ID: CVE-2026-23231)

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

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


4) Double free (CVE-ID: CVE-2025-71238)

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 qla2x00_update_optrom() function in drivers/scsi/qla2xxx/qla_bsg.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References