CVE-2021-47511
kernel: ALSA: pcm: oss: Fix negative period/buffer sizes
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 24, 2024
Updated · February 2, 2026
Description
A denial of service flaw exists in the Linux kernel such that a period size calculation in the OSS layer may receive a negative value as an error, but the code there assumes only the positive values, this may result in disruption to the availability of a system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-839 · Numeric Range Comparison Without Minimum Check