can: ems_usb: validate CPC message lengths

Summary

CVECVE-2026-74460
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:17:50 UTC
Updated2026-08-19 17:21:02 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.065320000 (date 2026-08-19)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6 git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 db5655287d78f00daf98888a520bb8da4d30126d git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 ce8125566b1d0b0f16449407e014addf451804ea git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 0b9090717c7e2184e2c427bbcc752f295116ac1d git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 0b23144c59c126beb4a7761a85a194ae0fe668a5 git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 df3ac2a672a5284441f120d486acabdd6740fc2a git Not specified
CNA Linux Linux affected 702171adeed3607ee9603ec30ce081411e36ae42 02925f51377f2a42a6724f00549167499c9302e5 git Not specified
CNA Linux Linux affected 2.6.32 Not specified
CNA Linux Linux unaffected 2.6.32 semver Not specified
CNA Linux Linux unaffected 5.15.216 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.183 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report