CVE-2021-47511
Alsa OSS Calculation Integer Overflow Imperfect Parsing
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.
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-2021-47511.
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-2021-47511 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47511 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/00a860678098fcd9fa8db2b5fb9d2ddf4776d4cc Added Reference https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823 Added Reference https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0c Added Reference https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1b Added Reference https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfe Added Reference https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2 Added Reference https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243 Added Reference https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 04, 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: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately. Added Reference kernel.org https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/00a860678098fcd9fa8db2b5fb9d2ddf4776d4cc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfe [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-2021-47511 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-2021-47511
weaknesses.