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.
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/11f83253244060b5de5eac787f61ae3f3e559d01 Patch
- git.kernel.org/stable/c/1eeedb310229bfee9dd4d992e5bba33fe1378a8f Patch
- git.kernel.org/stable/c/2a14e91b6d76639dac70ea170f4384c1ee3cb48d Patch
- git.kernel.org/stable/c/6ff2ebfef75fbc57d937d8fbe738b967edf2d331 Patch
- git.kernel.org/stable/c/93e01e837e105299f1c259ef71f6e1ec4fe806e3 Patch
- git.kernel.org/stable/c/fa9861e5c8af7651dddfa8d490aaada17ae33b6c Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 14 November 2026
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