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CVE-2021-47368 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28
https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b
https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270
https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption CISA-ADP  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47368
NVD Published Date:
05/21/2024
NVD Last Modified:
07/02/2024
Source:
kernel.org