CVEs-PoC/2021/CVE-2021-22600.md

CVE-2021-22600

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

POC

Reference

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

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/IdanBanani/Linux-Kernel-VR-Exploitation
• https://github.com/Ostorlab/KEV
• https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
• https://github.com/r4j0x00/exploits
• https://github.com/terawhiz/exploits