CVE-2026-98971

CVE-2026-98971: vulnerability in Linux

gpio: exar: initialize the ID before registering its cleanup

Published

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/01318927a9055136c207399eeb36ce07becac179https://git.kernel.org/stable/c/4d69e74034b208588636ecc177e0dd43a7696af3https://git.kernel.org/stable/c/b78c114600ae3df90c083c72c290437b068577c8https://git.kernel.org/stable/c/bf3d841ef12fcbec4458e2750956b738b043a226https://git.kernel.org/stable/c/f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2