CVE-2023-52584: spmi: mediatek: Fix UAF on device remove
First published: Wed Mar 06 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.115-1 6.1.119-1 6.11.10-1 |
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Reference Links
- 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://launchpad.net/bugs/cve/CVE-2023-52584
- https://git.kernel.org/linus/e821d50ab5b956ed0effa49faaf29912fd4106d9
- https://security-tracker.debian.org/tracker/CVE-2023-52584
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52584
- https://nvd.nist.gov/vuln/detail/CVE-2023-52584
- https://ubuntu.com/security/CVE-2023-52584
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