CVE-2021-20265
Linux Kernel Memory Exhausion Vulnerability
Description
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
INFO
Published Date :
March 10, 2021, 4:15 p.m.
Last Modified :
Nov. 21, 2024, 5:46 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-20265 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-2021-20265
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-2021-20265.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1908827 | Issue Tracking Patch Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b | Patch Vendor Advisory |
| https://www.oracle.com/security-alerts/cpuoct2021.html | Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1908827 | Issue Tracking Patch Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b | Patch Vendor Advisory |
| https://www.oracle.com/security-alerts/cpuoct2021.html | Patch 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).
Map Vulnerabilities into Different Layers of the Container Image
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20265 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20265 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://bugzilla.redhat.com/show_bug.cgi?id=1908827 Added Reference https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b Added Reference https://www.oracle.com/security-alerts/cpuoct2021.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Aug. 05, 2022
Action Type Old Value New Value Removed CWE NIST CWE-400 Added CWE NIST CWE-401 -
Modified Analysis by [email protected]
Dec. 08, 2021
Action Type Old Value New Value Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (including) 7.7.1 -
CVE Modified by [email protected]
Oct. 20, 2021
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpuoct2021.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 16, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:C) 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=1908827 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1908827 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b Patch, Vendor Advisory Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20265 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-2021-20265
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.02%
score
0.29350
percentile