CVE-2022-48977
Description
In the Linux kernel, the following vulnerability has been resolved: can: af_can: fix NULL pointer dereference in can_rcv_filter Analogue to commit 8aa59e355949 ("can: af_can: fix NULL pointer dereference in can_rx_register()") we need to check for a missing initialization of ml_priv in the receive path of CAN frames. Since commit 4e096a18867a ("net: introduce CAN specific pointer in the struct net_device") the check for dev->type to be ARPHRD_CAN is not sufficient anymore since bonding or tun netdevices claim to be CAN devices but do not initialize ml_priv accordingly.
How to fix
- linux linux_kernel5.4.227, 5.10.159, 5.15.83, 6.0.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.4.110 ≤ v < 5.4.227, 5.10.28 ≤ v < 5.10.159, 5.11.12 ≤ v < 5.15.83, 5.16 ≤ v < 6.0.13, 6.1 | 5.4.227, 5.10.159, 5.15.83, 6.0.13 |
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