CVE-2021-47368

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47368

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47368.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47368

Related

Published

2024-05-21T15:15:22Z

Modified

2024-09-11T04:41:09.196124Z

Summary

[none]

Details

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

enetc: Fix illegal access when reading affinity_hint

irqsetaffinityhit() stores a reference to the cpumaskt parameter in the irq descriptor, and that reference can be accessed later from irqaffinityhintprocshow(). Since the cpumask parameter passed to irqsetaffinityhit() 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 getcpumask() helper, which provides a permanent storage for the cpumask_t parameter.

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.70-1

Affected versions

5.*

5.10.46-4

5.10.46-5

5.10.70-1~bpo10+1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.14.9-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.14.9-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}