CVE-2024-36940
CVE-2024-36940 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-36290
- Weakness: CWE-415
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-36940?
- 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.
- How severe is CVE-2024-36940?
- CVE-2024-36940 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-36940 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-36940?
- CVE-2024-36940 primarily affects Linux Linux Kernel. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-36940?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-36940 have an EU (EUVD) identifier?
- Yes. CVE-2024-36940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-36290.
- When was CVE-2024-36940 published?
- CVE-2024-36940 was published on 2024-05-30 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/288bc4aa75f150d6f1ee82dd43c6da1b438b6068
- https://git.kernel.org/stable/c/41f88ef8ba387a12f4a2b8c400b6c9e8e54b2cca
- https://git.kernel.org/stable/c/5038a66dad0199de60e5671603ea6623eb9e5c79
- https://git.kernel.org/stable/c/558c8039fdf596a584a92c171cbf3298919c448c
- https://git.kernel.org/stable/c/735f4c6b6771eafe336404c157ca683ad72a040d
- https://git.kernel.org/stable/c/ac7d65795827dc0cf7662384ed27caf4066bd72e
- https://git.kernel.org/stable/c/cdaa171473d98962ae86f2a663d398fda2fbeefd
- https://git.kernel.org/stable/c/f9f1e321d53e4c5b666b66e5b43da29841fb55ba
- https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Affected products (8)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
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