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CVE-2026-46048

kernel: ALSA: caiaq: fix usb_dev refcount leak on probe failure

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's ALSA caiaq driver. This vulnerability, a reference count leak, occurs when the create_card() function acquires a reference to a USB device, but the corresponding release is not performed if init_card() fails before the destructor is properly assigned. A local attacker with a malformed Universal Audio Class 3 (UAC3) device could exploit this to cause a resource leak, potentially leading to a denial of service due to system resource exhaustion.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-911 · Improper Update of Reference Count