CVE-2021-22600
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
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.6
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
- EPSS probability
- 0.13%
- CISA KEV
- Known exploited vulnerability
- CWE
- CWE-415
- Published
- 2022-01-26
- Last modified
- 2026-03-13
Affected products
- Linux Kernel Kernel
Weakness type
Related vulnerabilities
- CVE-2021-21797 — An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted d
- CVE-2026-23918 — Apache HTTP Server: http2: double free and possible RCE on early reset
- CVE-2021-3492 — Ubuntu linux kernel shiftfs file system double free vulnerability
- CVE-2020-1647 — Junos OS: SRX Series: Double free vulnerability can lead to DoS or remote code execution due to the processing of a specific HTTP message when ICAP redirect service is enabled
- CVE-2026-87585 — Double free in PDFium in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to potentially exe
- CVE-2024-27099 — Azure IoT Platform Device SDK Double Free Vulnerability
- CVE-2024-23809 — A double-free vulnerability exists in the BrainVision ASCII Header Parsing functionality of The Biosig Project libbiosig
- CVE-2024-22097 — A double-free vulnerability exists in the BrainVision Header Parsing functionality of The Biosig Project libbiosig Maste