CVE-2020-7457

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 33.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-07-09 · updated 2026-06-17
Weakness: CWE-362

Description

In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.

Affected products

FreeBSD: 11.3, 11.3-p1, 11.3-p10, 11.3-p2, 11.3-p3, 11.3-p4 (+15)

References

http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc
https://security.netapp.com/advisory/ntap-20200724-0002/
http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc
https://security.netapp.com/advisory/ntap-20200724-0002/

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