https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T13:41:52.917670+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-45865 CVE-2026-45865 — mctp i2c: initialise event handler read bytes 2026-09-29T13:41:52.929632+00:00

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

mctp i2c: initialise event handler read bytes

Set a 0xff value for i2c reads of an mctp-i2c device. Otherwise reads will return "val" from the i2c bus driver. For i2c-aspeed and i2c-npcm7xx that is a stack uninitialised u8.

Tested with "i2ctransfer -y 1 r10@0x34" where 0x34 is a mctp-i2c instance, now it returns all 0xff.