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.
Product status
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before 93e01e837e105299f1c259ef71f6e1ec4fe806e3
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before 11f83253244060b5de5eac787f61ae3f3e559d01
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before fa9861e5c8af7651dddfa8d490aaada17ae33b6c
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before 6ff2ebfef75fbc57d937d8fbe738b967edf2d331
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before 1eeedb310229bfee9dd4d992e5bba33fe1378a8f
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 (git) before 2a14e91b6d76639dac70ea170f4384c1ee3cb48d
5.18
Any version before 5.18
6.1.165 (semver)
6.6.128 (semver)
6.12.75 (semver)
6.18.14 (semver)
6.19.4 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/93e01e837e105299f1c259ef71f6e1ec4fe806e3
git.kernel.org/...c/11f83253244060b5de5eac787f61ae3f3e559d01
git.kernel.org/...c/fa9861e5c8af7651dddfa8d490aaada17ae33b6c
git.kernel.org/...c/6ff2ebfef75fbc57d937d8fbe738b967edf2d331
git.kernel.org/...c/1eeedb310229bfee9dd4d992e5bba33fe1378a8f
git.kernel.org/...c/2a14e91b6d76639dac70ea170f4384c1ee3cb48d