CVE-2026-31687

NameCVE-2026-31687
DescriptionIn 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().
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1vulnerable
bullseye (security)5.10.251-1fixed
bookworm6.1.159-1vulnerable
bookworm (security)6.1.164-1fixed
trixie6.12.73-1fixed
trixie (security)6.12.74-2fixed
forky6.19.13-1fixed
sid6.19.14-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebullseye5.10.251-1
linuxsourcebookworm6.1.164-1
linuxsourcetrixie6.12.73-1
linuxsource(unstable)6.18.12-1

Notes

https://git.kernel.org/linus/730e5ebff40c852e3ea57b71bf02a4b89c69435f (6.19-rc8)

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