CVE-2026-74460
can: ems_usb: validate CPC message lengths
Description
In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: validate CPC message lengths ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer. Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers.
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 15, 2026, 1:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply kernel patches for the 'can: ems_usb' module.
- Validate CPC message lengths in URB payload.
- Ensure type-specific payloads cover all handler fields.
- Update the Linux kernel to the latest stable version.
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-2026-74460.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74460 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-2026-74460
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-2026-74460 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74460 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.
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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': '702171adeed3607ee9603ec30ce081411e36ae42', 'lessThan': 'ce8125566b1d0b0f16449407e014addf451804ea', 'versionType': 'git'}, {'status': 'affected', 'version': '702171adeed3607ee9603ec30ce081411e36ae42', 'lessThan': '0b9090717c7e2184e2c427bbcc752f295116ac1d', 'versionType': 'git'}, {'status': 'affected', 'version': '702171adeed3607ee9603ec30ce081411e36ae42', 'lessThan': '0b23144c59c126beb4a7761a85a194ae0fe668a5', 'versionType': 'git'}, {'status': 'affected', 'version': '702171adeed3607ee9603ec30ce081411e36ae42', 'lessThan': 'df3ac2a672a5284441f120d486acabdd6740fc2a', 'versionType': 'git'}, {'status': 'affected', 'version': '702171adeed3607ee9603ec30ce081411e36ae42', 'lessThan': '02925f51377f2a42a6724f00549167499c9302e5', 'versionType': 'git'}], 'programFiles': ['drivers/net/can/usb/ems_usb.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.32'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.32', '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': ['drivers/net/can/usb/ems_usb.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: validate CPC message lengths ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer. Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers. Added Reference https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5 Added Reference https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5 Added Reference https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d Added Reference https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea Added Reference https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a