CVE-2021-47179

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47179

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47179.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47179

Related

Published

2024-03-25T10:15:09Z

Modified

2024-09-18T01:00:22Z

Severity

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

Summary

[none]

Details

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

NFSv4: Fix a NULL pointer dereference in pnfsmarkmatchinglsegsreturn()

Commit de144ff4234f changes pnfsreturnlayout() to call pnfsmarkmatchinglsegsreturn() passing NULL as the struct pnfslayoutrange argument. Unfortunately, pnfsmarkmatchinglsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops.

I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.

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

5.10.46-1

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"
}