What’s Vulnerable › Vulnerabilities

CVE-2026-74460: can: ems_usb: validate CPC message lengths

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-03

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.

Affected products

• Linux kernel: 2.6.32 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5
• https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5
• https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d
• https://git.kernel.org/stable/c/1c380a332e342b7d58c86c4f556cb0823b16a9b8
• https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6
• https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea
• https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d
• https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a

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