can: ems_usb: ems_usb_read_bulk_callback(): check the proper length of a message
Summary
| CVE | CVE-2026-23307 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-25 11:16:26 UTC |
| Updated | 2026-04-18 09:16:18 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_usb_read_bulk_callback(): check the proper length of a message When looking at the data in a USB urb, the actual_length is the size of the buffer passed to the driver, not the transfer_buffer_length which is set by the driver as the max size of the buffer. When parsing the messages in ems_usb_read_bulk_callback() properly check the size both at the beginning of parsing the message to make sure it is big enough for the expected structure, and at the end of the message to make sure we don't overflow past the end of the buffer for the next message. |
Risk And Classification
EPSS: 0.000370000 probability, percentile 0.108430000 (date 2026-04-18)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 aed172a2e2330131f0977d2acd3ec8883f413ec1 git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 f10177e6c4575aedaea580ce67d792fab7a2235e git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 c703bbf8e9b4947e111c88d2ed09236a6772a471 git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 1818974e1b5ef200e27f144c8cb8a246420bb54d git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 18f75b9cbdc3703f15965425ab69dee509b07785 git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 1cf469026d4a2308eaa91d04dca4a900d07a5c2e git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 2833e13e2b099546abf5d40a483b4eb04ddd1f7b git | Not specified |
| CNA | Linux | Linux | affected 702171adeed3607ee9603ec30ce081411e36ae42 38a01c9700b0dcafe97dfa9dc7531bf4a245deff 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 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.77 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.17 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.7 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/1818974e1b5ef200e27f144c8cb8a246420bb54d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2833e13e2b099546abf5d40a483b4eb04ddd1f7b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/18f75b9cbdc3703f15965425ab69dee509b07785 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/38a01c9700b0dcafe97dfa9dc7531bf4a245deff | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1cf469026d4a2308eaa91d04dca4a900d07a5c2e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/aed172a2e2330131f0977d2acd3ec8883f413ec1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f10177e6c4575aedaea580ce67d792fab7a2235e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c703bbf8e9b4947e111c88d2ed09236a6772a471 | 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 |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.