CVE-2026-52963
ALSA: usb-audio: Bound MIDI endpoint descriptor scans
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI endpoint descriptor scans snd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific endpoint descriptor whose bLength exceeds the remaining bytes in the endpoint-extra scan. That leaves later flexible-array reads bounded by bLength, but not by the remaining bytes in the endpoint-extra scan. Stop walking when bLength is zero or extends past the remaining endpoint-extra scan.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 14, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Validate MIDIStreaming descriptor size.
- Stop scan if descriptor exceeds remaining bytes.
- Ensure bLength is not zero or too large.
- Apply the fix to the ALSA subsystem.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-52963.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-52963 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-52963
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-52963 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-52963 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14.200 up to (excluding) 4.15 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19.149 up to (excluding) 4.20 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4.238 up to (excluding) 4.5 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9.238 up to (excluding) 4.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.4.69 up to (excluding) 5.5 *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 5.10.258 Added Reference Type kernel.org: https://git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': 'e2f1260a056eb3215c13c48c5378f3e4112dc3af', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': 'c65b137d351e21cbc5630e73ef0eb1e1d75f5b20', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': '728ab0c72e49ca27185067984cd565425eb69b2e', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': '3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': 'a0226560540c16717efcceaf15c862cf115b01d3', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': '09141583bd97f4bbd7358e29fd138fe798467cdb', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': 'c59159ce10e75b568cd0d4b29efcb0fb0ddecc94', 'versionType': 'git'}, {'status': 'affected', 'version': '5c6cd7021a05a02fcf37f360592d7c18d4d807fb', 'lessThan': 'd6854daa67be623860f4e1873fd3d3c275aba4ed', 'versionType': 'git'}, {'status': 'affected', 'version': '9e0c71f2f633b0442661966228827d1a33df485f', 'versionType': 'git'}, {'status': 'affected', 'version': '0868bc5654c07628c421547f0821650a8c2cb8f3', 'versionType': 'git'}, {'status': 'affected', 'version': '78483c1c7741ffa72991d93d19a75bfdcc2cbf57', 'versionType': 'git'}, {'status': 'affected', 'version': '65d95462001c6ccd9bc9499c1fc9a90eca9de496', 'versionType': 'git'}, {'status': 'affected', 'version': 'ca767cf0152d18fc299cde85b18d1f46ac21e1ba', 'versionType': 'git'}, {'status': 'affected', 'version': '4.4.238', 'lessThan': '4.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.9.238', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.14.200', 'lessThan': '4.15', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.19.149', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.69', 'lessThan': '5.5', 'versionType': 'semver'}], 'programFiles': ['sound/usb/midi.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.258', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/midi.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Bound MIDI endpoint descriptor scans snd_usbmidi_get_ms_info() validates the internal MIDIStreaming endpoint descriptor size before using baAssocJackID[], but the descriptor walker can still return a class-specific endpoint descriptor whose bLength exceeds the remaining bytes in the endpoint-extra scan. That leaves later flexible-array reads bounded by bLength, but not by the remaining bytes in the endpoint-extra scan. Stop walking when bLength is zero or extends past the remaining endpoint-extra scan. Added Reference https://git.kernel.org/stable/c/09141583bd97f4bbd7358e29fd138fe798467cdb Added Reference https://git.kernel.org/stable/c/3d3b2b01a3e73828e201ece96f863e7a3e0cdc6e Added Reference https://git.kernel.org/stable/c/728ab0c72e49ca27185067984cd565425eb69b2e Added Reference https://git.kernel.org/stable/c/a0226560540c16717efcceaf15c862cf115b01d3 Added Reference https://git.kernel.org/stable/c/c59159ce10e75b568cd0d4b29efcb0fb0ddecc94 Added Reference https://git.kernel.org/stable/c/c65b137d351e21cbc5630e73ef0eb1e1d75f5b20 Added Reference https://git.kernel.org/stable/c/d6854daa67be623860f4e1873fd3d3c275aba4ed Added Reference https://git.kernel.org/stable/c/e2f1260a056eb3215c13c48c5378f3e4112dc3af