CVE-2025-38380 Information

Description

In the Linux kernel the following vulnerability has been resolved:

i2c/designware: Fix an initialization issue

The i2c_dw_xfer_init() function requires msgs and msg_write_idx from the dev context to be initialized.

amd_i2c_dw_xfer_quirk() inits msgs and msgs_num but not msg_write_idx.

This could allow an out of bounds access (of msgs).

Initialize msg_write_idx before calling i2c_dw_xfer_init().

Reference

https://git.kernel.org/stable/c/3d30048958e0d43425f6d4e76565e6249fa71050 https://git.kernel.org/stable/c/475f89e1f9bde45fc948589e7cde1f5d899ae412 https://git.kernel.org/stable/c/4c37963d67fb945a59faf53bebe048ca201e44df https://git.kernel.org/stable/c/5b622e672e49e50c33fc64cd06b05ce76e1de460 https://git.kernel.org/stable/c/6358cb9c2a31e23b6b51bfcd7fe2b7becaf6b149 https://git.kernel.org/stable/c/9b5b600e751fae92ba571b015eaf02c9c58e2083

Related CNNVD

CNNVD-202507-3207 (Published: 2025-07-25)