8.4
HIGH
CVSS 3.1
CVE-2026-74497
ALSA: usb-audio: Clamp frame size in implicit-feedback mode
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Clamp frame size in implicit-feedback mode snd_usb_handle_sync_urb() scales received sync packet sizes by the sender's stride and stores the result directly in out_packet->packet_size[i]. If a connected USB device sends an oversized sync packet, this frame count can exceed ep->maxframesize. The un-clamped frame count then propagates to the playback endpoint queue, potentially driving packet transfers beyond the endpoint's hardware frame limits. Cap the calculated frame count against ep->maxframesize in snd_usb_handle_sync_urb() to prevent oversized packets from entering the playback queue.
Details
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 19, 2026, 5:21 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Clamp USB audio frame size to prevent oversized packets and memory corruption.
- Apply the patch to snd_usb_handle_sync_urb.
- Ensure sync packet sizes are capped.
- Prevent oversized packets from entering queue.
- Validate endpoint hardware frame limits.
References
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-2026-74497.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74497 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-2026-74497
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-2026-74497 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74497 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 19, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/09cf3dbbb4256a43feb91d2f51f274510a9ada47 Added Reference https://git.kernel.org/stable/c/2d39fea6d3c19a2f5811d123114d92e3d0115fd1 Added Reference https://git.kernel.org/stable/c/cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '56ac3e7c90f6b45969c3fd07a98fad760ffd6901', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'be97fea7451d758881b95af78e900dd0d58a382a', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2db4535d6af79276a64449201c5be5feffb31c64', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '53f0aa37eb945f3c983f61d12fc35eb33debb8a9', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '8d7a30c50c2e58a6839634ed0acde14466d1dc61', 'versionType': 'git'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2d39fea6d3c19a2f5811d123114d92e3d0115fd1', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '09cf3dbbb4256a43feb91d2f51f274510a9ada47', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'cfa8d3e0e8b812c4db4d5241f62b6bdbab2bd7be', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '56ac3e7c90f6b45969c3fd07a98fad760ffd6901', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'be97fea7451d758881b95af78e900dd0d58a382a', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2db4535d6af79276a64449201c5be5feffb31c64', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '53f0aa37eb945f3c983f61d12fc35eb33debb8a9', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '8d7a30c50c2e58a6839634ed0acde14466d1dc61', 'versionType': 'git'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '56ac3e7c90f6b45969c3fd07a98fad760ffd6901', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'be97fea7451d758881b95af78e900dd0d58a382a', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2db4535d6af79276a64449201c5be5feffb31c64', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '53f0aa37eb945f3c983f61d12fc35eb33debb8a9', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '8d7a30c50c2e58a6839634ed0acde14466d1dc61', 'versionType': 'git'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '56ac3e7c90f6b45969c3fd07a98fad760ffd6901', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'be97fea7451d758881b95af78e900dd0d58a382a', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2db4535d6af79276a64449201c5be5feffb31c64', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '53f0aa37eb945f3c983f61d12fc35eb33debb8a9', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '8d7a30c50c2e58a6839634ed0acde14466d1dc61', 'versionType': 'git'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '56ac3e7c90f6b45969c3fd07a98fad760ffd6901', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': 'be97fea7451d758881b95af78e900dd0d58a382a', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '2db4535d6af79276a64449201c5be5feffb31c64', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '53f0aa37eb945f3c983f61d12fc35eb33debb8a9', 'versionType': 'git'}, {'status': 'affected', 'version': '28acb12014fb0c3e1edfdab1b1e3e266cf651550', 'lessThan': '8d7a30c50c2e58a6839634ed0acde14466d1dc61', 'versionType': 'git'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['sound/usb/endpoint.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Clamp frame size in implicit-feedback mode snd_usb_handle_sync_urb() scales received sync packet sizes by the sender's stride and stores the result directly in out_packet->packet_size[i]. If a connected USB device sends an oversized sync packet, this frame count can exceed ep->maxframesize. The un-clamped frame count then propagates to the playback endpoint queue, potentially driving packet transfers beyond the endpoint's hardware frame limits. Cap the calculated frame count against ep->maxframesize in snd_usb_handle_sync_urb() to prevent oversized packets from entering the playback queue. Added Reference https://git.kernel.org/stable/c/2db4535d6af79276a64449201c5be5feffb31c64 Added Reference https://git.kernel.org/stable/c/53f0aa37eb945f3c983f61d12fc35eb33debb8a9 Added Reference https://git.kernel.org/stable/c/56ac3e7c90f6b45969c3fd07a98fad760ffd6901 Added Reference https://git.kernel.org/stable/c/8d7a30c50c2e58a6839634ed0acde14466d1dc61 Added Reference https://git.kernel.org/stable/c/be97fea7451d758881b95af78e900dd0d58a382a
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.