CVE-2021-38203

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-667

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947Exploit, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947Exploit, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210902-0010/Third Party Advisory

Timeline

Published: Aug 8, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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