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

References

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• https://nvd.nist.gov/vuln/detail/CVE-2021-22600
• https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-9736
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
• https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
• https://www.debian.org/security/2022/dsa-5096
• https://security.netapp.com/advisory/ntap-20230110-0002/