high7.5
CVE-2022-23084
The total size of the user-provided nmreq to nmreq_copyin() was first computed and then trusted during the copyin.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Freebsd | Freebsd | from 12.0 before 12.3 Versions 12.3, 13.0 |