CVE-2021-38208

medium

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.

References

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

Details

Source: MITRE

Published: 2021-08-08

Updated: 2021-09-21

Type: CWE-476

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM