CVE-2026-23307
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,…
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 2th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/1818974e1b5ef200e27f144c8cb8a246420bb54dPatch
- https://git.kernel.org/stable/c/18f75b9cbdc3703f15965425ab69dee509b07785Patch
- https://git.kernel.org/stable/c/1cf469026d4a2308eaa91d04dca4a900d07a5c2ePatch
- https://git.kernel.org/stable/c/2833e13e2b099546abf5d40a483b4eb04ddd1f7bPatch
- https://git.kernel.org/stable/c/38a01c9700b0dcafe97dfa9dc7531bf4a245deffPatch
- https://git.kernel.org/stable/c/aed172a2e2330131f0977d2acd3ec8883f413ec1Patch
- https://git.kernel.org/stable/c/c703bbf8e9b4947e111c88d2ed09236a6772a471Patch
- https://git.kernel.org/stable/c/f10177e6c4575aedaea580ce67d792fab7a2235ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.