Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mctp i3c: handle NULL header address daddr can be NULL if there is no neighbour table entry present, in that case the tx packet should be dropped. saddr will usually be set by MCTP core, but check for NULL in case a packet is transmitted by a different protocol.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.7, < 6.12.19 |
References
- https://git.kernel.org/stable/c/740bf9c9b715cc327d34b1e2d4ee79fcd4c47a56Patch
- https://git.kernel.org/stable/c/cf7ee25e70c6edfac4553d6b671e8b19db1d9573Patch
- https://git.kernel.org/stable/c/d8be54c35aee29d96d1350b1b6f153be4da37c07Patch
FAQ
What is CVE-2025-21903?
CVE-2025-21903 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: mctp i3c: handle NULL header address daddr can be NULL if there is no neighbour table entry present, in that case the tx packet sh...
How severe is CVE-2025-21903?
CVE-2025-21903 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-2025-21903?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.