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

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.

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Fixes

Solution

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Workaround

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History

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:*:*:*:*:*:*

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:09:30.496Z

Reserved: 2024-05-21T14:58:30.810Z

Link: CVE-2021-47368

cve-icon Vulnrichment

Updated: 2024-08-04T05:32:08.655Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-21T15:15:22.773

Modified: 2025-04-02T14:53:33.090

Link: CVE-2021-47368

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47368 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses