CVE Database · CVE-2021-22600
CVSS v3.1
6.6
EPSS
5.92%
Published
Jan 26, 2022
Modified
Oct 24, 2025
CISA Known Exploited Vulnerability
Added: 2022-04-11 · Due: 2022-05-02
Apply updates per vendor instructions.
Public PoC / Exploit (3)
All weaponized →Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.
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
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:HWeaknesses (CWE)
Affected Products (25)
References (9)