HIGH CISA KEV

CVE-2021-22600

CVSS v3

7

HIGH

EPSS Score

0.1%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

CISA Known Exploited Vulnerability

Date Added
4/11/2022
Patch Due Date
5/2/2022
Ransomware Use
Unknown

Technical details

Published
1/26/2022

Frequently asked questions

What is CVE-2021-22600?

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

Is CVE-2021-22600 actively exploited?

Yes. CVE-2021-22600 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 5/2/2022.

What is the CVSS score for CVE-2021-22600?

CVE-2021-22600 has a CVSS v3 base score of 7 (HIGH severity).

Is CVE-2021-22600 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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