enetc: Fix illegal access when reading affinity_hint
irq_set_affinity_hit() stores a reference to the cpumask_t
parameter in the irq descriptor, and that reference can be
accessed later from irq_affinity_hint_proc_show(). Since
the cpu_mask parameter passed to irq_set_affinity_hit() has
only temporary storage (it's on the stack memory), later
accesses to it are illegal. Thus reads from the corresponding
procfs affinity_hint file can result in paging request oops.
The issue is fixed by the get_cpu_mask() helper, which provides
a permanent storage for the cpumask_t parameter.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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Configuration 1 [-]
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Tracking
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Wed, 02 Apr 2025 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* |
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-11T13:53:21.363Z
Reserved: 2024-05-21T14:58:30.810Z
Link: CVE-2021-47368
Vulnrichment
Updated: 2024-08-04T05:32:08.655Z
NVD
Status : Analyzed
Published: 2024-05-21T15:15:22.773
Modified: 2025-04-02T14:53:33.090
Link: CVE-2021-47368
Redhat
OpenCVE Enrichment
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