CVE-2022-49269

In the Linux kernel, the following vulnerability has been resolved:

can: isotp: sanitize CAN ID checks in isotp_bind()

Syzbot created an environment that lead to a state machine status that can not be reached with a compliant CAN ID address configuration. The provided address information consisted of CAN ID 0x6000001 and 0xC28001 which both boil down to 11 bit CAN IDs 0x001 in sending and receiving.

Sanitize the SFF/EFF CAN ID values before performing the address checks.

This vulnerability is rated as Moderate severity because exploitation requires local access to bind CAN sockets to trigger a denial of service, with no compromise of data confidentiality or integrity. The CAN ISO-TP protocol is specialized for automotive and embedded networking and is not active or needed on standard enterprise server deployments. Consequently, typical configurations are not exposed unless CAN network interfaces and related socket operations are explicitly configured and accessible.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.