PT-2025-40671 · Linux+3 · Linux Kernel+3
Published
2023-05-09
·
Updated
2025-12-04
·
CVE-2022-50484
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
A flaw exists in the Linux kernel's ALSA subsystem, specifically within the usb-audio driver. A memory leak can occur when the driver attempts to allocate resources, such as URBs (USB Request Blocks) or buffers, and encounters an allocation failure (-ENOMEM). If this failure happens during the allocation loop for synchronous endpoint URBs, partially allocated URBs may not be properly released, leading to a memory leak. The issue arises because the
ep->nurbs variable is not set before the error handling path is executed, preventing the error handler from iterating over the complete list of URBs.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Centos
Linux Kernel
Red Hat
Suse