CVE-2021-47509

MEDIUM

Published 2024-05-24T15:09:25.349Z

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CVSS Score

V3.1

5.5

/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Base Score Metrics

Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01

0.000

probability

of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25

Exploit Probability

Percentile: 0.152

Higher than 15.2% of all CVEs

Attack Vector Metrics

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Impact Metrics

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Affected Versions:

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux