CVE-2026-22986

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

gpiolib: fix race condition for gdev->srcu

If two drivers were calling gpiochip_add_data_with_key(), one may be

traversing the srcu-protected list in gpio_name_to_desc(), meanwhile

other has just added its gdev in gpiodev_add_to_list_unlocked().

This creates a non-mutexed and non-protected timeframe, when one

instance is dereferencing and using &gdev->srcu, before the other

has initialized it, resulting in crash:

[ 4.935481] Unable to handle kernel paging request at virtual address ffff800272bcc000

[ 4.943396] Mem abort info:

[ 4.943400] ESR = 0x0000000096000005

[ 4.943403] EC = 0x25: DABT (current EL), IL = 32 bits

[ 4.943407] SET = 0, FnV = 0

[ 4.943410] EA = 0, S1PTW = 0

[ 4.943413] FSC = 0x05: level 1 translation fault

[ 4.943416] Data abort info:

[ 4.943418] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000

[ 4.946220] CM = 0, WnR = 0, TnD = 0, TagAccess = 0

[ 4.955261]

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References