CVE-2023-52584

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.

CVSS v3.1 Score

3.8

LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.1.77
linux	linux_kernel	6.2 — 6.6.16
linux	linux_kernel	6.7 — 6.7.4

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2023-52584? +

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. It has a CVSS v3.1 base score of 3.8 (LOW).

How severe is CVE-2023-52584? +

CVE-2023-52584 has a CVSS v3.1 score of 3.8 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2023-52584? +

CVE-2023-52584 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52584? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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