CVE-2026-45865
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.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.