HIGHCVSS v3.1 7.0Actively exploited · CISA KEV since 2022-04-11Vulnerability

CVE-2021-22600

Linux Kernel contains a flaw in the packet socket (AF_PACKET) implementation which could lead to incorrectly freeing memory. A local user could exploit this for denial-of-service (DoS) or possibly for privilege escalation.

Properties

Euvd product
Kernel
Vulnerability name
Linux Kernel Privilege Escalation Vulnerability
First seen
2025-10-21T23:15:48+00:00
Cvss score
7
Epss score
0.06586
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-02
Euvd assigner
Google
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2022-04-11T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2022-04-11
Score
7
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Linux kernel, Linux
Cvss vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
6.6

Related Entities (24 · showing 23)

AFFECTS_PRODUCT (21 · showing 20)

→[Product]cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:c400:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:c400_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Linux Kernel Privilege Escalation Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Double Free

INVOLVES (1)

←[Signal]kev_added · 2022-04-11

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CVE-2021-22600 (CVSS v3.1 7) — Ninja Signal Threat Intelligence | Ninja Signal