CVE-2021-22600

6.6 MEDIUM CISA KEV - Actively Exploited
Published: January 26, 2022 Modified: October 24, 2025
View on NVD

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

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Source: cve-coordination@google.com
Mailing List Patch
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Source: cve-coordination@google.com
Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20230110-0002/
Source: cve-coordination@google.com
Third Party Advisory
https://www.debian.org/security/2022/dsa-5096
Source: cve-coordination@google.com
Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20230110-0002/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.debian.org/security/2022/dsa-5096
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.6 / 10.0
EPSS (Exploit Probability)
0.2%
37th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-05-02

Weaknesses (CWE)

CWE-415 CWE-415

Affected Vendors

netapp debian linux

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