Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.18, < 6.1.165 |
References
- https://git.kernel.org/stable/c/11f83253244060b5de5eac787f61ae3f3e559d01Patch
- https://git.kernel.org/stable/c/1eeedb310229bfee9dd4d992e5bba33fe1378a8fPatch
- https://git.kernel.org/stable/c/2a14e91b6d76639dac70ea170f4384c1ee3cb48dPatch
- https://git.kernel.org/stable/c/6ff2ebfef75fbc57d937d8fbe738b967edf2d331Patch
- https://git.kernel.org/stable/c/93e01e837e105299f1c259ef71f6e1ec4fe806e3Patch
- https://git.kernel.org/stable/c/fa9861e5c8af7651dddfa8d490aaada17ae33b6cPatch
FAQ
What is CVE-2026-45865?
CVE-2026-45865 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 "v...
How severe is CVE-2026-45865?
CVE-2026-45865 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-2026-45865?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.