CVE-2021-47509
Linux ALSA OSS Buffer Overflow
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB Set the practical limit to the period size (the fragment shift in OSS) instead of a full 31bit; a too large value could lead to the exhaust of memory as we allocate temporary buffers of the period size, too. As of this patch, we set to 16MB limit, which should cover all use cases.
INFO
Published Date :
May 24, 2024, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 6:36 a.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-2021-47509.
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-2021-47509 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47509 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/2e54cf6794bf82a54aaefc78da13819aea9cd28a Added Reference https://git.kernel.org/stable/c/35a3e511032146941085f87dd9fb5b82ea5c00a2 Added Reference https://git.kernel.org/stable/c/76f19e4cbb548e28547f8c328aa0bfb3a10222d3 Added Reference https://git.kernel.org/stable/c/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2 Added Reference https://git.kernel.org/stable/c/ad45babf7886e7a212ee1d5eda9ef49f696db43c Added Reference https://git.kernel.org/stable/c/b02a41eebcc36d4f07196780f2e165ca2c499257 Added Reference https://git.kernel.org/stable/c/be55f306396cd62c6889286a7194fd8b53363aeb Added Reference https://git.kernel.org/stable/c/d1bb703ad050de9095f10b2d3416c32921ac6bcc -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 07, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H -
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. 24, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB Set the practical limit to the period size (the fragment shift in OSS) instead of a full 31bit; a too large value could lead to the exhaust of memory as we allocate temporary buffers of the period size, too. As of this patch, we set to 16MB limit, which should cover all use cases. Added Reference kernel.org https://git.kernel.org/stable/c/d1bb703ad050de9095f10b2d3416c32921ac6bcc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b02a41eebcc36d4f07196780f2e165ca2c499257 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/be55f306396cd62c6889286a7194fd8b53363aeb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2e54cf6794bf82a54aaefc78da13819aea9cd28a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/76f19e4cbb548e28547f8c328aa0bfb3a10222d3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ad45babf7886e7a212ee1d5eda9ef49f696db43c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/35a3e511032146941085f87dd9fb5b82ea5c00a2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2 [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-2021-47509 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-2021-47509
weaknesses.