CVE-2021-38203

Public Exploit

Description

btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 mailing list patch vendor advisory
https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 exploit third party advisory patch
https://security.netapp.com/advisory/ntap-20210902-0010/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-38203?
CVE-2021-38203 has been scored as a medium severity vulnerability.
How to fix CVE-2021-38203?
To fix CVE-2021-38203, 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-2021-38203 being actively exploited in the wild?
It is possible that CVE-2021-38203 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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