PT-2021-3824
CVE-2021-38208
·
تاريخ النشر
2021-05-31
·
تاريخ التحديث
2023-05-17
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
Linux kernel versions prior to 5.12.10
Description
The issue is related to a NULL pointer dereference in the net/nfc/llcp sock.c component of the Linux kernel. It can be exploited by local unprivileged users to cause a denial of service by making a getsockname call after a certain type of failure of a bind call, such as when LLCP SAP MAX is used as SAP. This can lead to a denial of service (NULL pointer dereference and BUG).
Recommendations
For Linux kernel versions prior to 5.12.10, update to version 5.12.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the
getsockname() function and the bind() call in the net/nfc/llcp sock.c component to minimize the risk of exploitation.قابلية الاستغلال
استغلال
إصلاح
التأثيرات
الباحثون
المورّدون
المنتجات المتأثرة
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