CVE-2022-49844

In the Linux kernel, the following vulnerability has been resolved: can: dev: fix skb drop check In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan. This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv. [mkl: patch pch_can, too]

The following products are affected by CVE-2022-49844 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49844.

URL	Resource
https://git.kernel.org/stable/c/386c49fe31ee748e053860b3bac7794a933ac9ac
https://git.kernel.org/stable/c/ae64438be1923e3c1102d90fd41db7afcfaf54cc
https://lore.kernel.org/linux-cve-announce/2025050141-CVE-2022-49844-e0b9@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49844
https://www.cve.org/CVERecord?id=CVE-2022-49844