CVE-2021-47252
Microsoft BTS - Time-Related Check Timing Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker. But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
April 30, 2025, 3:12 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-2021-47252.
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-2021-47252 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47252 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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Initial Analysis by [email protected]
Apr. 30, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.14 up to (excluding) 4.4.293 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.274 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.238 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.196 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.128 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.13 Added Reference Type CVE: https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f Added Reference https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8 Added Reference https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f Added Reference https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09 Added Reference https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e Added Reference https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1 Added Reference https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4 Added Reference https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker. But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn. Added Reference kernel.org https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1 [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-2021-47252 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-2021-47252
weaknesses.