CVE-2025-21903

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < d8be54c35aee29d96d1350b1b6f153be4da37c07affected
LinuxLinuxc8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < 740bf9c9b715cc327d34b1e2d4ee79fcd4c47a56affected
LinuxLinuxc8755b29b58ec65be17bcb8c40763d2dcb1f1db5 < cf7ee25e70c6edfac4553d6b671e8b19db1d9573affected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.12.19 <= 6.12.*unaffected
LinuxLinux6.13.7 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

References