CVEvulnerability
CVE-2026-74461
8.4 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.4 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
i2c: imx: Cancel hrtimer before clearing slave pointer
In i2c_imx_unreg_slave(), the slave pointer is set to NULL after
disabling interrupts. However, a pending interrupt might already
have started the hrtimer (i2c_imx_slave_timeout) before the pointer
was cleared. If the hrtimer fires after i2c_imx->slave is set to
NULL, the timer callback i2c_imx_slave_finish_op() will call
i2c_imx_slave_event() with a NULL slave pointer, which results in a
use-after-free / NULL pointer dereference.
Fix by canceling the hrtimer and waiting for it to complete after
disabling interrupts, before clearing the slave pointer.
References
- https://git.kernel.org/stable/c/470fe15fb3bb2eba6629be301ca7e991ee3cfb7e git.kernel.org
- https://git.kernel.org/stable/c/6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f git.kernel.org
- https://git.kernel.org/stable/c/753060f2b77ff2f386addbd3ecadb95b9f90cddd git.kernel.org
- https://git.kernel.org/stable/c/a8a1f9ac3d763e721586f15479ef9140b216ddf3 git.kernel.org
- https://git.kernel.org/stable/c/affd62f5719a78135b7441aa49c8cab3c3b5e838 git.kernel.org
- https://git.kernel.org/stable/c/dab4762ee7f3fd0a01980d5407ba48d0261d3bff git.kernel.org
- https://git.kernel.org/stable/c/e3da77bdb4015051656bb472c295656bbea03b6f git.kernel.org