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CVE-2021-22600

MEDIUM
Published 2022-01-26T00:00:00.000Z
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Expert Analysis

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CVSS Score

V3.1
6.6
/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.101
Higher than 10.1% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED

Impact Metrics

Confidentiality
LOW
Integrity
LOW
Availability
HIGH

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

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux Kernel

Kernel

Affected Versions:

unspecified unspecified unspecified unspecified

Known Exploited Vulnerability

This vulnerability is actively being exploited in the wild

View KEV Details

Remediation Status

Overdue

Due Date

May 2, 2022

Added to KEV

April 11, 2022

Required Action

Apply updates per vendor instructions.

Affected Product

Vendor/Project: Linux
Product: Kernel

Ransomware Risk

Known Ransomware Use
KEV Catalog Version: 2025.01.24 Released: January 24, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-6rrc-7vqp-364c

Advisory Details

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

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-22600
WEB https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
WEB https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
WEB https://security.netapp.com/advisory/ntap-20230110-0002
WEB https://www.debian.org/security/2022/dsa-5096

Advisory provided by GitHub Security Advisory Database. Published: January 27, 2022, Modified: February 24, 2025

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://www.debian.org/security/2022/dsa-5096
https://security.netapp.com/advisory/ntap-20230110-0002/
Published: 2022-01-26T00:00:00.000Z
Last Modified: 2025-07-28T19:46:15.517Z
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