CVE-2020-7462

MEDIUM

FreeBSD 11.3-RELEASE before p13 and 11.4-PRERELEASE before r360733 - Use-After-Free in IPv6 Hop-by-Hop Options Handling

Title source: llm
STIX 2.1

Description

In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

References (1)

Core 1
Core References

Scores

CVSS v3 5.5
EPSS 0.0005
EPSS Percentile 15.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-416
Status published
Products (2)
freebsd/freebsd 11.3 (13 CPE variants)
freebsd/freebsd 11.4
Published Mar 26, 2021
Tracked Since Feb 18, 2026