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drivers/amd/pm: fix a use-after-free in kv_parse_power_table
jira LE-1907 cve CVE-2023-52469 Rebuild_History Non-Buildable kernel-4.18.0-553.16.1.el8_10 commit-author Zhipeng Lu <alexious@zju.edu.cn> commit 28dd788 When ps allocated by kzalloc equals to NULL, kv_parse_power_table frees adev->pm.dpm.ps that allocated before. However, after the control flow goes through the following call chains: kv_parse_power_table |-> kv_dpm_init |-> kv_dpm_sw_init |-> kv_dpm_fini The adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its first free in kv_parse_power_table and causes a use-after-free bug. Fixes: a2e73f5 ("drm/amdgpu: Add support for CIK parts") Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 28dd788) Signed-off-by: Jonathan Maple <jmaple@ciq.com>
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