UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
29 explicit affected versions
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37 explicit affected versions
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26 explicit affected versions
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26 explicit affected versions
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44 explicit affected versions
4 explicit affected versions
4 explicit affected versions
16 explicit affected versions
9 explicit affected versions
12 explicit affected versions
13 explicit affected versions
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7 explicit affected versions
10 explicit affected versions
14 explicit affected versions
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3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
7 explicit affected versions
11 explicit affected versions
9 explicit affected versions
35 explicit affected versions
12 explicit affected versions
10 explicit affected versions
6 explicit affected versions
12 explicit affected versions
50 explicit affected versions
12 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/e821d50ab5b956ed0effa49faaf29912fd4106d9
- 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://ubuntu.com/security/CVE-2023-52584
- https://ubuntu.com/security/notices/USN-6688-1
- https://ubuntu.com/security/notices/USN-6818-1
- https://ubuntu.com/security/notices/USN-6818-2
- https://ubuntu.com/security/notices/USN-6818-3
- https://ubuntu.com/security/notices/USN-6818-4
- https://ubuntu.com/security/notices/USN-6819-1
- https://ubuntu.com/security/notices/USN-6819-2
- https://ubuntu.com/security/notices/USN-6819-3
- https://ubuntu.com/security/notices/USN-6819-4
- https://www.cve.org/CVERecord?id=CVE-2023-52584