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
- 2022-04-11
- Patch Due Date
- 2022-05-02
- Ransomware Use
- Unknown
Technical details
- Published
- 2022-01-26
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 2022-05-02.
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?
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