CVE-2021-38208 Information

Description

net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bba https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10 http://www.openwall.com/lists/oss-security/2021/08/17/1 http://www.openwall.com/lists/oss-security/2021/08/17/2 https://bugzilla.redhat.com/show_bug.cgi?id=1992810 http://www.openwall.com/lists/oss-security/2021/08/24/2

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5