CVE-2020-7452

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-29 · updated 2026-06-17
Weakness: CWE-119

Description

In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.

Affected products

FreeBSD: 11.3, 11.3-p1, 11.3-p2, 11.3-p3, 11.3-p4, 11.3-p5 (+4)

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:07.epair.asc
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:07.epair.asc

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