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CVE-2026-31687

gpio: omap: do not register driver in probe() PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: gpio: omap: do not register driver in probe() Commit 11a78b794496 ("ARM: OMAP: MPUIO wake updates") registers the omap_mpuio_driver from omap_mpuio_init(), which is called from omap_gpio_probe(). However, it neither makes sense to register drivers from probe() callbacks of other drivers, nor does the driver core allow registering drivers with a device lock already being held. The latter was revealed by commit dc23806a7c47 ("driver core: enforce device_lock for driver_match_device()") leading to a potential deadlock condition described in [1]. Additionally, the omap_mpuio_driver is never unregistered from the driver core, even if the module is unloaded. Hence, register the omap_mpuio_driver from the module initcall and unregister it in module_exit().

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 11a78b7944963a8b052be46108d07a3ced9e2762 before 57bcd3feffa79544c73a1a1872472389a391cc79; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before 86588916e1887a5edb8a9161cd7ae81e47a7ed25; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before a29215961d833f4de33a09c3964d31ebc6083033; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before 1c04c3a4de8d4bcb9202f94c44f26c57c2572308; affected adc1796eced46b48e23ec200a219d635f33a38ee before 673dafb9a86349a12a93151fd467625614dc7e12; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before 2211d77892913804d16c28c7415b82804ab1e54c; affected cd0e0a76e40c2e77bcfc88291d00dca22b00158e before a7fa9460b86f810913b6779461d0448e7c11214c; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before 32f08c3ddd6dda6cbb6c9d715de10f21dccde50f; affected 8d76b2488eb3cc0717ab81b60622cff4a5f90f79 before 53a76425e0764421ba93bb9045d2e454667d5687; affected 11a78b7944963a8b052be46108d07a3ced9e2762 before 730e5ebff40c852e3ea57b71bf02a4b89c69435f; affected bc82e5f4d7dc8237ae8cabc73aa46fc93c85d98c before 03db4dc9ad6eb91e640b517e00373ce877682854; affected 6.6.125 before 6.6.126; affected 6.12.72 before 6.12.73; affected 6.18.11 before 6.18.12; affected 6.19.1 before 6.19.2
Linux / Linuxaffected 2.6.22; unaffected 0 before 2.6.22; unaffected 5.10.251 through 5.10.*; unaffected 5.15.201 through 5.15.*; unaffected 6.1.164 through 6.1.*; unaffected 6.6.125 through 6.6.*; unaffected 6.6.126 through 6.6.*; unaffected 6.12.72 through 6.12.*; unaffected 6.12.73 through 6.12.*; unaffected 6.18.11 through 6.18.*; unaffected 6.18.12 through 6.18.*; unaffected 6.19.2 through 6.19.*; unaffected 6.19 through *

CWE

No CWE identifiers supplied.

References