PT-2024-8910 · Linux+3 · Linux Kernel+3
Bixuan Cui
+1
·
Published
2024-05-24
·
Updated
2025-09-29
·
CVE-2021-47511
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions:
Linux kernel (affected versions not specified)
Description:
The issue is related to the ALSA component in the Linux kernel, where the period size calculation in the OSS layer may receive a negative value as an error. However, the code assumes only positive values and handles them with size t, which can lead to a too big value being passed to the lower layers. This can cause a buffer overflow. The patch changes the code to handle the error with ssize t and adds proper error checks.
Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse