CVE-2026-31627 PUBLISHED

i2c: s3c24xx: check the size of the SMBUS message before using it

Assigner: Linux
Reserved: 09.03.2026 Published: 24.04.2026 Updated: 25.04.2026

In the Linux kernel, the following vulnerability has been resolved:

i2c: s3c24xx: check the size of the SMBUS message before using it

The first byte of an i2c SMBUS message is the size, and it should be verified to ensure that it is in the range of 0..I2C_SMBUS_BLOCK_MAX before processing it.

This is the same logic that was added in commit a6e04f05ce0b ("i2c: tegra: check msg length in SMBUS block read") to the i2c tegra driver.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 85747311ecb6167c989093c64a13807366fdd3a9 to d87d5620125a03b1eadbd5df39748215d3db7ddb (excl.)
  • affected from 85747311ecb6167c989093c64a13807366fdd3a9 to 377fae22a137b6b89f3f32399a58c52cf2325416 (excl.)
  • affected from 85747311ecb6167c989093c64a13807366fdd3a9 to 71b3c316b22c555d2769126a92b1244b15a9750d (excl.)
  • affected from 85747311ecb6167c989093c64a13807366fdd3a9 to aaaaec39ddbcd06770dca7f1adebc3b1242ebe7b (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 3.10 is affected
  • unaffected from 0 to 3.10 (excl.)
  • unaffected from 6.12.83 to 6.12.* (incl.)
  • unaffected from 6.18.24 to 6.18.* (incl.)
  • unaffected from 6.19.14 to 6.19.* (incl.)
  • unaffected from 7.0.1 to 7.0.* (incl.)

References