What’s Vulnerable › Vulnerabilities

CVE-2023-52584: spmi: mediatek: Fix UAF on device remove

• Severity: low (CVSS 3.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-06 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: spmi: mediatek: Fix UAF on device remove The pmif driver data that contains the clocks is allocated along with spmi_controller. On device remove, spmi_controller will be freed first, and then devres , including the clocks, will be cleanup. This leads to UAF because putting the clocks will access the clocks in the pmif driver data, which is already freed along with spmi_controller. This can be reproduced by enabling DEBUG_TEST_DRIVER_REMOVE and building the kernel with KASAN. Fix the UAF issue by using unmanaged clk_bulk_get() and putting the clocks before freeing spmi_controller.

Affected products

• Linux kernel: before 6.1.77; from 6.2 before 6.6.16; from 6.7 before 6.7.4 — fixed in 6.1.77, 6.6.16, 6.7.4

How to fix

Upgrade to a fixed version: Linux kernel 6.1.77, 6.6.16, 6.7.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/521f28eedd6b14228c46e3b81e3bf9b90c2818d8
• https://git.kernel.org/stable/c/9a3881b1f07db1bb55cb0108e6f05cfd027eaf2e
• https://git.kernel.org/stable/c/e821d50ab5b956ed0effa49faaf29912fd4106d9
• https://git.kernel.org/stable/c/f8dcafcb54632536684336161da8bdd52120f95e
• https://git.kernel.org/stable/c/521f28eedd6b14228c46e3b81e3bf9b90c2818d8
• https://git.kernel.org/stable/c/9a3881b1f07db1bb55cb0108e6f05cfd027eaf2e
• https://git.kernel.org/stable/c/e821d50ab5b956ed0effa49faaf29912fd4106d9
• https://git.kernel.org/stable/c/f8dcafcb54632536684336161da8bdd52120f95e

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