Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum: Protect driver from buggy firmware When processing port up/down events generated by the device's firmware, the driver protects itself from events reported for non-existent local ports, but not the CPU port (local port 0), which exists, but lacks a netdev. This can result in a NULL pointer dereference when calling netif_carrier_{on,off}(). Fix this by bailing early when processing an event reported for the CPU port. Problem was only observed when running on top of a buggy emulator.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4, < 5.10.83 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/63b08b1f6834bbb0b4f7783bf63b80c8c8e9a047Patch
- https://git.kernel.org/stable/c/90d0736876c50ecde1a3275636a06b9ddb1cace9Patch
- https://git.kernel.org/stable/c/da4d70199e5d82da664a80077508d6c18f5e76dfPatch
- https://git.kernel.org/stable/c/63b08b1f6834bbb0b4f7783bf63b80c8c8e9a047Patch
- https://git.kernel.org/stable/c/90d0736876c50ecde1a3275636a06b9ddb1cace9Patch
- https://git.kernel.org/stable/c/da4d70199e5d82da664a80077508d6c18f5e76dfPatch
FAQ
What is CVE-2021-47560?
CVE-2021-47560 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum: Protect driver from buggy firmware When processing port up/down events generated by the device's firmware, the dr...
How severe is CVE-2021-47560?
CVE-2021-47560 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-2021-47560?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.