NULL Pointer Dereference Affecting kernel-rt-core package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.2% (10th percentile)

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  • Snyk IDSNYK-RHEL10-KERNELRTCORE-18651955
  • published14 Aug 2026
  • disclosed10 Aug 2026

Introduced: 10 Aug 2026

NewCVE-2026-68345  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 kernel-rt-core.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-core package and not the kernel-rt-core package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

arm_mpam: guard MBWU state before adding it to garbage

__destroy_component_cfg() adds each RIS mbwu_state object to the MPAM garbage list when destroying component configuration.

However, mbwu_state is allocated per RIS and only for RISes with MBWU monitors. A component can therefore have comp->cfg allocated while some RISes still have ris->mbwu_state set to NULL.

Passing a NULL mbwu_state to add_to_garbage() dereferences the NULL pointer inside the macro.

Skip RISes that do not have an mbwu_state object before adding them to the garbage list.

CVSS Base Scores

version 3.1