CVE-2026-90340

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().

Package Linux Kernel
Published 2026-09-17
Last modified 2026-09-17
Patch available
Yes

Affected versions

Linux kernel versions 7.2 and later are affected. Fixed in 7.2.6, 7.3-rc1 and their respective stable series.

Affected from
≥ 7.2
Fixed in
✓ 7.2.6 7.2.x ✓ 7.3-rc1

References

2 total

Frequently asked questions

  • What is CVE-2026-90340?

    CVE-2026-90340 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 7.2 onward and has been patched in 7.2.6 and 7.3-rc1. CVE-2026-90340 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-90340?

    Yes. CVE-2026-90340 has been patched. Fixed versions include 7.2.6 and 7.3-rc1. If you are running Linux kernel 7.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-90340 actively exploited?

    No. CVE-2026-90340 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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