cve-2021-47368
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2024-12-19 07:40
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90
Impacted products
Vendor Product Version
Linux Linux Version: 5.1
Show details on NVD website

To clipboard 

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  }
}


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