PT-2021-12653
CVE-2020-7462
·
تاريخ النشر
2020-09-02
·
تاريخ التحديث
2021-04-02
الوصف من
CVSS 3.1
5.5
متوسطةالمقاييسAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions:
FreeBSD versions 11.3-RELEASE before p13
FreeBSD versions 11.4-PRERELEASE before r360733
Description:
The issue is caused by improper mbuf handling in the kernel, leading to a use-after-free bug when sending IPv6 Hop-by-Hop options over the loopback interface. This may result in unintended kernel behavior, including a kernel panic.
Recommendations:
For FreeBSD versions 11.3-RELEASE before p13, update to p13 or later to resolve the issue.
For FreeBSD versions 11.4-PRERELEASE before r360733, update to r360733 or later to resolve the issue.
As a temporary workaround, consider restricting the use of IPv6 Hop-by-Hop options over the loopback interface until a patch is available.
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