CVE-2020-7469

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-04 · updated 2026-06-17
Weakness: CWE-416

Description

In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free.

Affected products

FreeBSD: 11.4, 11.4-beta1, 11.4-p1, 11.4-p2, 11.4-p3, 11.4-p4 (+13)
Clustered Data ONTAP: all versions

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc
https://security.netapp.com/advisory/ntap-20210720-0001/
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc
https://security.netapp.com/advisory/ntap-20210720-0001/

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