CVE-2021-47356

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47356

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47356.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47356

Related

Published

2024-05-21T15:15:21Z

Modified

2024-09-18T03:17:26.198009Z

Summary

[none]

Details

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

mISDN: fix possible use-after-free in HFC_cleanup()

This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free.

Fix by calling deltimersync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

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

5.14.6-1

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

5.14.6-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}