Vulnerability CVE-2022-23084


Published: 2024-02-15

Description:
The total size of the user-provided nmreq to nmreq_copyin() was first computed and then trusted during the copyin. This time-of-check to time-of-use bug could lead to kernel memory corruption.

On systems configured to include netmap in their devfs_ruleset, a privileged process running in a jail can affect the host environment.

 References:
https://security.freebsd.org/advisories/FreeBSD-SA-22:04.netmap.asc

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