CVE-2021-3679
Linux Kernel Tracing Module CPU Resource Exhaustion Vulnerability
Description
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
INFO
Published Date :
Aug. 5, 2021, 8:15 p.m.
Last Modified :
Oct. 27, 2022, 12:29 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-3679 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-3679
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-2021-3679.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1989165 | Issue Tracking Patch Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a | Mailing List Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html | Mailing List Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4978 | 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).
Exploitation for CVE-2021-3679 and document for its fix
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3679 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3679 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 -
Reanalysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Third Party Advisory https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Mailing List, Third Party Advisory Removed CWE NIST CWE-400 Added CWE NIST CWE-835 -
Modified Analysis by [email protected]
Jan. 01, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 17, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 18, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4978 No Types Assigned https://www.debian.org/security/2021/dsa-4978 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 16, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 25, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4978 [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 13, 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://bugzilla.redhat.com/show_bug.cgi?id=1989165 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1989165 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a Mailing List, Patch, Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.14 *cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3679 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-2021-3679
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile