CVE-2021-47520

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47520

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47520.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47520

Related

Published

2024-05-24T15:15:14Z

Modified

2024-09-18T03:18:51.571010Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

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

can: pchcan: pchcanrxnormal: fix use after free

After calling netifreceiveskb(skb), dereferencing skb is unsafe. Especially, the canframe cf which aliases skb memory is dereferenced just after the call netifreceive_skb(skb).

Reordering the lines solves the issue.

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

5.10.92-1

Affected versions

5.*

5.10.46-4

5.10.46-5

5.10.70-1~bpo10+1

5.10.70-1

5.10.84-1

5.10.92-1~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

5.15.15-1

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

5.15.15-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}