Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
No affected versions have been published.
Timeline
- Published
- Aug 10, 2026
- Last modified
- Aug 17, 2026
- NVD status
- Received