CVE-2026-52964 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans The USB MIDI 2.0 endpoint parser has the same descriptor walking pattern as the legacy MIDI parser. It validates bLength against bNumGrpTrmBlock before reading baAssoGrpTrmBlkID[], but not against the remaining bytes in the endpoint-extra scan. A malformed device can therefore make later baAssoGrpTrmBlkID[] reads consume bytes past the walked descriptor. Reject zero-length and overlong descriptors while walking endpoint extras.
A vulnerability in the USB MIDI 2.0 endpoint parser of the Linux kernel allows malformed devices to exploit descriptor parsing. The issue arises because the parser does not properly validate the length of certain descriptors, enabling devices to send misleading information that the parser accepts. This flaw can cause the parser to read beyond the intended data, potentially leading to memory corruption or other unintended behavior. The vulnerability affects the ALSA USB audio subsystem, specifically in the handling of MIDI 2.0 endpoint descriptors.
Users can update to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for updating the kernel can be found in the official Linux documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/17e76b19de1aff5ff4de64d269290bd1b07a01d3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/918be519c7876329e1b6e2ea1c59f0b75e792dca | kernel.org | Patch |
| https://git.kernel.org/stable/c/a310b4bebda5e4a1b26520c0cc5145ccd6d617e2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f9c184a83574549a36ea69b755f650e57d164c78 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fafc97bd01e4c737eaeafadfdadb1af4bbfa7307 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.5, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 7.1 rc1 7.1 rc2 7.1 rc3 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | Initial Analysis | [email protected] |
| Jun 24, 2026 | New CVE Received | kernel.org |