CVE-2022-23084

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Freebsd

PublishedFeb 15, 2024

First seenFeb 15, 2024

Weakness typeCWE-367CWE-367

How to fix

Update

freebsd freebsd12.3 or later

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
freebsd freebsd	12.0 ≤ v < 12.3, 12.3, 13.0	12.3

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