Medium severity5.5NVD Advisory· Published Apr 1, 2025· Updated Jun 17, 2026
CVE-2025-21903
CVE-2025-21903
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.
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