CVE-2021-38203
Btrfs Linux Kernel Deadlock Denial of Service
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.
INFO
Published Date :
Aug. 8, 2021, 8:15 p.m.
Last Modified :
Nov. 21, 2024, 6:16 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2021-38203
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-38203.
| URL | Resource |
|---|---|
| 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 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-5.13.4 | Mailing List Patch Vendor Advisory |
| https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 | Exploit Patch Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210902-0010/ | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-38203 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38203 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Added Reference https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 Added Reference https://security.netapp.com/advisory/ntap-20210902-0010/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
May. 03, 2022
Action Type Old Value New Value Changed CWE CWE-770 CWE-667 -
Modified Analysis by [email protected]
Oct. 07, 2021
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20210902-0010/ No Types Assigned https://security.netapp.com/advisory/ntap-20210902-0010/ Third Party Advisory Added CPE Configuration AND OR *cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 02, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210902-0010/ [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 12, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 No Types Assigned https://github.com/torvalds/linux/commit/1cb3db1cf383a3c7dbda1aa0ce748b0958759947 Exploit, Patch, Third Party Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38203 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-38203
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} -0.01%
score
0.25202
percentile