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FreeBSD: VID-74BBDE13-EC17-11EA-88F8-901B0EF719AB (CVE-2020-7462): FreeBSD -- IPv6 Hop-by-Hop options use-after-free bug

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FreeBSD: VID-74BBDE13-EC17-11EA-88F8-901B0EF719AB (CVE-2020-7462): FreeBSD -- IPv6 Hop-by-Hop options use-after-free bug

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
09/02/2020
Created
09/05/2020
Added
09/03/2020
Modified
04/05/2021

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From VID-74BBDE13-EC17-11EA-88F8-901B0EF719AB:

Problem Description:

Due to improper mbuf handling in the kernel, a use-after-free bug might be

triggered by sending IPv6 Hop-by-Hop options over the loopback interface.

Impact:

Triggering the use-after-free situation may result in unintended kernel

behaviour including a kernel panic.

Solution(s)

  • freebsd-upgrade-base-11_3-release-p13

References

  • CVE-2020-7462

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