What is CVE-2020-7462?

CVE-2020-7462 is a medium-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 5.5/10. Published 2021-03-26.

How severe is CVE-2020-7462?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Use After Free in Freebsd

CVE-2020-7462

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.

Vulnerability class: Use-After-Free

EPSS: 0.002 (12.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Freebsd — versions 11.3, 11.4
N/a Freebsd — versions FreeBSD 11.3-RELEASE before p13

Weakness classification (CWE)

CWE-416 — Use After Free

References

secteam@freebsd.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-7462?: CVE-2020-7462 is a medium-severity vulnerability in Freebsd, classified under Use After Free. CVSS score: 5.5/10. Published 2021-03-26.
How severe is CVE-2020-7462?: Medium severity. CVSS v3 base score is 5.5 out of 10.