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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 04 Nov 2024 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:12:32.885Z

Reserved: 2024-05-24T15:02:54.823Z

Link: CVE-2021-47509

cve-icon Vulnrichment

Updated: 2024-08-04T05:39:59.773Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-24T15:15:11.780

Modified: 2024-11-21T06:36:23.717

Link: CVE-2021-47509

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-24T00:00:00Z

Links: CVE-2021-47509 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:15:53Z