CVE-2026-98971
Published Oct 23, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: gpio: exar: initialize the ID before registering its cleanup devm_add_action_or_reset() invokes the cleanup action immediately when registering the action fails. gpio_exar_probe() currently stores the allocated ID in exar_gpio only after registering the action, so that failure makes exar_devm_ida_free() release ID 0. If the allocated ID is nonzero, this leaks that ID and can free ID 0 belonging to another device. Store the ID before registering the cleanup action so both the immediate failure path and normal device teardown release the correct allocation.
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References
Other References
https://git.kernel.org/stable/c/01318927a9055136c207399eeb36ce07becac179
https://git.kernel.org/stable/c/4d69e74034b208588636ecc177e0dd43a7696af3
https://git.kernel.org/stable/c/b78c114600ae3df90c083c72c290437b068577c8
https://git.kernel.org/stable/c/bf3d841ef12fcbec4458e2750956b738b043a226
https://git.kernel.org/stable/c/f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2
Frequently Asked Questions
What is CVE-2026-98971? +
In the Linux kernel, the following vulnerability has been resolved:
gpio: exar: initialize the ID before registering its cleanup
devm_add_action_or_reset() invokes the cleanup action immediately when
registering the action fails. gpio_exar_probe() currently stores the
allocated ID in exar_gpio only after registering the action, so that
failure makes exar_devm_ida_free() release ID 0. If the allocated ID is
nonzero, this leaks that ID and can free ID 0 belonging to another device.
Store the ID before registering the cleanup action so both the immediate
failure path and normal device teardown release the correct allocation.
How do I check if I'm vulnerable to CVE-2026-98971? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.