CVE-2021-20219

Description

A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Third-Party Advisory redhat.com
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1923738 issue tracking third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20219?
CVE-2021-20219 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20219?
To fix CVE-2021-20219, 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-2021-20219 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20219 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20219?
CVE-2021-20219 affects n/a kernel.
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