CVE-2021-46920
Linux Kernel idxd DMAEngine Buffer Overflow Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.
INFO
Published Date :
Feb. 27, 2024, 7:15 a.m.
Last Modified :
April 10, 2024, 2:52 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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-2021-46920.
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-2021-46920 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46920 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Apr. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8 No Types Assigned https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8 Patch Changed Reference Type https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d No Types Assigned https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d Patch Changed Reference Type https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f No Types Assigned https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.6.0 up to (excluding) 5.10.32 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.11.16 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read. Added Reference Linux https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f [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-2021-46920 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-2021-46920
weaknesses.