CVE-2021-28039
Xen Linux Kernel Unprivileged I/O Denial of Service
Description
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
INFO
Published Date :
March 5, 2021, 6:15 p.m.
Last Modified :
March 25, 2024, 1:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
2.0
Affected Products
The following products are affected by CVE-2021-28039
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-2021-28039.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/03/05/2 | Mailing List Patch Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-369.html | Patch Vendor Advisory |
| https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2 | |
| https://security.netapp.com/advisory/ntap-20210409-0001/ | 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-2021-28039 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-28039 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 -
CVE Modified by [email protected]
Mar. 25, 2024
Action Type Old Value New Value Added Reference MITRE https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2 [No types assigned] -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-400 CWE-131 -
Modified Analysis by [email protected]
May. 20, 2022
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20210409-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20210409-0001/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 09, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210409-0001/ [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 09, 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:C/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2021/03/05/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/03/05/2 Mailing List, Patch, Third Party Advisory Changed Reference Type http://xenbits.xen.org/xsa/advisory-369.html No Types Assigned http://xenbits.xen.org/xsa/advisory-369.html Patch, Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration AND *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:x86:* versions from (including) 5.9.0 up to (including) 5.11.3 *cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 05, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/03/05/2 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-28039 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-2021-28039
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
0.05349
percentile