CVE-2021-4149
Btrfs Denial of Service Deadlock Vulnerability
Description
A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.
INFO
Published Date :
March 23, 2022, 8:15 p.m.
Last Modified :
Feb. 1, 2023, 3:53 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-4149 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-4149.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2026485 | Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html | Mailing List Third Party Advisory |
| https://lkml.org/lkml/2021/10/18/885 | Exploit Mailing List Patch Third Party Advisory |
| https://lkml.org/lkml/2021/9/13/2565 | Exploit Mailing List 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).
Check linux sources dump for known CVEs.
linux kernel cve cve-scanning coccinelle
Python SmPL
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-4149 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-4149 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 01, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 01, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html [No Types Assigned] -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Jun. 22, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* -
Initial Analysis by [email protected]
Mar. 30, 2022
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://bugzilla.redhat.com/show_bug.cgi?id=2026485 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2026485 Issue Tracking, Third Party Advisory Changed Reference Type https://lkml.org/lkml/2021/10/18/885 No Types Assigned https://lkml.org/lkml/2021/10/18/885 Exploit, Mailing List, Patch, Third Party Advisory Changed Reference Type https://lkml.org/lkml/2021/9/13/2565 No Types Assigned https://lkml.org/lkml/2021/9/13/2565 Exploit, Mailing List, Third Party Advisory Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:a:linux:linux_kernel:5.15:-:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* *cpe:2.3:a:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-4149 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-2021-4149
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.19806
percentile