Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-74461

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/08/2026
Last modified:
19/08/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> i2c: imx: Cancel hrtimer before clearing slave pointer<br /> <br /> In i2c_imx_unreg_slave(), the slave pointer is set to NULL after<br /> disabling interrupts. However, a pending interrupt might already<br /> have started the hrtimer (i2c_imx_slave_timeout) before the pointer<br /> was cleared. If the hrtimer fires after i2c_imx-&gt;slave is set to<br /> NULL, the timer callback i2c_imx_slave_finish_op() will call<br /> i2c_imx_slave_event() with a NULL slave pointer, which results in a<br /> use-after-free / NULL pointer dereference.<br /> <br /> Fix by canceling the hrtimer and waiting for it to complete after<br /> disabling interrupts, before clearing the slave pointer.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.40 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.40
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools