CVE-2022-3586

Description

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.

References

https://github.com/torvalds/linux/commit/9efd23297cca

https://www.zerodayinitiative.com/advisories/upcoming/

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

Details