CVE-2021-22600

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

References

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

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

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

https://www.tenable.com/cyber-exposure/tenable-2022-threat-landscape-report

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

Details

Source: Mitre, NVD

Published: 2022-01-26

Updated: 2025-02-24

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00028