Vulnerability Details CVE-2022-23084
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.8%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2022-23084
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cpe:2.3:o:freebsd:freebsd:12.0
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cpe:2.3:o:freebsd:freebsd:12.1
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cpe:2.3:o:freebsd:freebsd:12.2
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cpe:2.3:o:freebsd:freebsd:12.3
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cpe:2.3:o:freebsd:freebsd:13.0