CVE-2021-22600 - Double free

Immediate

Remediate Within 48 Hours

CVE Information|Basic Analysis|Framework Mapping|Web Framework Mapping|Compliance

CVE Information

Original CVE data

Published: January 26, 2022

Updated: June 26, 2023

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

CWE: CWE-415

CVSS v27.2

AV:L/AC:L/AU:N/C:C/I:C/A:C

CVSS v37

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

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

https://www.debian.org/security/2022/dsa-5096

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

https://security.netapp.com/advisory/ntap-20230110-0002/

Affected Vendors

Debian - (1)

Linux - (1)

Netapp - (5)

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Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOⁿengine

Double free

CVSS Scores as calculated by PRIOⁿengine

CVSS v27.2

AV:L/AC:L/AU:N/C:C/I:C/A:C

CVSS v37.8

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

MITRE CWE Top 25

Exploits

Exploits are available either through exploit packs, Github repos or the world wide web in general.

Active Exploitation

Vulnerability is referenced under CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

Vulnerability is mentioned or trending in social media.

Threat Actor Activity

Vulnerability is being actively exploited by threat actors during campaigns.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1529 - System Shutdown/Reboot

T1499.004 - Endpoint Denial of Service (Application or System Exploitation)

T1203 - Exploitation for Client Execution

T1068 - Exploitation for Privilege Escalation

T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

Web Application Security Frameworks

Applicable if the issue likely affects a web application