# CVE-2026-98971: gpio: exar: initialize the ID before registering its cleanup

CVE-2026-98971 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-98971, released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98971
- Priority: Routine
- CVSS: 3.0 (Low)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98971

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.113-1 | [DEBIAN-CVE-2026-98971](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98971.md) | Oct 24, 2026 |
| Linux | linux Debian 14 | 7.2.11-1 | [DEBIAN-CVE-2026-98971](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98971.md) | Oct 24, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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