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.
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.
Published:
2026-08-10
Score:
n/a
EPSS:
n/a
KEV:
No
Impact:
n/a
Action:
n/a
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
|
|||||||||||||||
| Linux | Linux | affected |
|
No data.
No data.
No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
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References
History
Mon, 10 Aug 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | arm_mpam: guard MBWU state before adding it to garbage | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-08-10T12:03:22.098Z
Reserved: 2026-07-30T09:28:09.384Z
Link: CVE-2026-68345
Vulnrichment
No data.
NVD
No data.
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses
No weakness.