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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

Github

- https://github.com/ARPSyndicate/cvemon

- https://github.com/Chinmay1743/af_packet.c

- https://github.com/IdanBanani/Linux-Kernel-VR-Exploitation

- https://github.com/Ostorlab/KEV

- https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors

- https://github.com/PuddinCat/GithubRepoSpider

- https://github.com/aquahubtest4/r4j

- https://github.com/aquahubtest5/r4j

- https://github.com/plzheheplztrying/cve_monitor

- https://github.com/r4j0x00/exploits

- https://github.com/sendINUX/CVE-2021-22600__DirtyPagetable

- https://github.com/terawhiz/exploits