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CVE-2026-45865

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CVE-2026-45865

Published: May 27, 2026

Modified: May 27, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 - < 93e01e837e105299f1c259ef71f6e1ec4fe806e3
affected
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 - < 11f83253244060b5de5eac787f61ae3f3e559d01
affected
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 - < fa9861e5c8af7651dddfa8d490aaada17ae33b6c
affected
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 - < 6ff2ebfef75fbc57d937d8fbe738b967edf2d331
affected
f5b8abf9fc3dacd7529d363e26fe8230935d65f8 - < 1eeedb310229bfee9dd4d992e5bba33fe1378a8f

+1 more versions

Linux

Linux

affected
5.18
unaffected
0 - < 5.18
unaffected
6.1.165 - <= 6.1.*
unaffected
6.6.128 - <= 6.6.*
unaffected
6.12.75 - <= 6.12.*

+3 more versions

References

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