CVE-2021-38208

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.02%
Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bba patch third party advisory exploit
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10 patch vendor advisory mailing list
http://www.openwall.com/lists/oss-security/2021/08/17/1 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/08/17/2 third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1992810 patch third party advisory issue tracking
http://www.openwall.com/lists/oss-security/2021/08/24/2 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-38208?
CVE-2021-38208 has been scored as a medium severity vulnerability.
How to fix CVE-2021-38208?
To fix CVE-2021-38208, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38208 being actively exploited in the wild?
It is possible that CVE-2021-38208 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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