Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4.110, < 5.4.227 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0acc442309a0a1b01bcdaa135e56e6398a49439cPatch
- https://git.kernel.org/stable/c/3982652957e8d79ac32efcb725450580650a8644Patch
- https://git.kernel.org/stable/c/c142cba37de29f740a3852f01f59876af8ae462aPatch
- https://git.kernel.org/stable/c/c42221efb1159d6a3c89e96685ee38acdce86b6fPatch
- https://git.kernel.org/stable/c/fcc63f2f7ee3038d53216edd0d8291e57c752557Patch
FAQ
What is CVE-2022-48977?
CVE-2022-48977 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 derefe...
How severe is CVE-2022-48977?
CVE-2022-48977 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-48977?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.