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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No solution or workaround provided in the CVE record.
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Fri, 23 Oct 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux linux
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| Vendors & Products |
Linux linux
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Fri, 23 Oct 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-351 CWE-665 |
Fri, 23 Oct 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
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| 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. | |
| Title | gpio: exar: initialize the ID before registering its cleanup | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-10-23T12:19:44.536Z
Reserved: 2026-09-25T10:25:14.383Z
Link: CVE-2026-98971
No data.
Status : Received
Published: 2026-10-23T13:17:18.673
Modified: 2026-10-23T13:17:18.673
Link: CVE-2026-98971
No data.
OpenCVE Enrichment
Updated: 2026-10-23T19:30:17Z