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CVE-2026-98657: iio: proximity: pulsedlight: fix iio_device left registered on PM setup failure

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: iio: proximity: pulsedlight: fix iio_device left registered on PM setup failure pm_runtime_set_active() failing in probe() jumps to error_unreg_buffer, which only calls iio_triggered_buffer_cleanup() -- it does not undo the iio_device_register() that already succeeded a few lines above. probe() then returns the error, the devm-managed indio_dev is freed, but the iio core still has it registered: the sysfs/chardev nodes stay live and point at freed memory. Add an error_unreg_dev label that unregisters the iio device before falling through to the existing buffer cleanup, mirroring the teardown order already used in lidar_remove().

Affected products

• Linux: 4.5 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/06fa13c53442257b94ea1519555ceddaaea57e0d
• https://git.kernel.org/stable/c/20ebd7f4e35c0a737f011bc83aeb0cdd37507648
• https://git.kernel.org/stable/c/2c8211eef98929c5188f8c2224e83b9a63b41bd1
• https://git.kernel.org/stable/c/4a564e39cb99234e8c5b0a39aa30edcc8cf4cf1b
• https://git.kernel.org/stable/c/4daa9ca557b4b98ae1ad38a6d1deaa3e31eb8edf
• https://git.kernel.org/stable/c/58e68e5272a319fff4a704df1ac41e9e3c69587c
• https://git.kernel.org/stable/c/93ecee9ff3af4c2b482fdd4ec98c3308e8dd23a6
• https://git.kernel.org/stable/c/e462b47b9637b8c0285f4a38b5af9a322847d164

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