SB2026050596 - SUSE update for the Linux Kernel RT (Live Patch 9 for SUSE Linux Enterprise 15 SP7)

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Main Vulnerability Database SB2026050596

SB2026050596 - SUSE update for the Linux Kernel RT (Live Patch 9 for SUSE Linux Enterprise 15 SP7)

Published: May 5, 2026

Security Bulletin ID SB2026050596
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

High 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2026-23004)

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

The vulnerability exists due to a use-after-free error within the rt6_uncached_list_add() function in net/ipv6/route.c. A local user can escalate privileges on the system.


2) Out-of-bounds read (CVE-ID: CVE-2026-23204)

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 u32_classify() function in net/sched/cls_u32.c. A local user can perform a denial of service (DoS) attack.


3) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-31431)

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

The vulnerability exists due to improper memory handling within the authencesn cryptographic template in algif_aead when processing AEAD operations. A local user can trigger the vulnerable code path to execute arbitrary code on the system.

Note, this vulnerability was dubbed "Copy Fail". 


Remediation

Install update from vendor's website.

References