Vulnerability · Published Jun 4, 2021 · Assigned by freebsd

CVE-2020-7469

High 7.5

In plain English

A high-severity security flaw in FreeBSD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).

Severity (CVSS NVD)7.5High

Exploit odds (30 days)1.2%top 31.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
n/a	FreeBSD	FreeBSD 12.2-RELEASE before p1, 12.1-RELEASE before p11, 11.4-RELEASE before p5

References

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