Vulnerability in Linux Kernel
CVE-2021-38203
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 (Patch, Mailing List, Vendor Advisory)
- github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 (Exploit, Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210902-0010/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-38203?
- CVE-2021-38203 is a medium-severity vulnerability in Linux Kernel, classified under Improper Locking. CVSS score: 5.5/10. Published 2021-08-08.
- How severe is CVE-2021-38203?
- Medium severity. CVSS v3 base score is 5.5 out of 10.