CVE-2023-52691: drm/amd/pm: fix a double-free in si_dpm_init

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-08-04
Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix a double-free in si_dpm_init When the allocation of adev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries fails, amdgpu_free_extended_power_table is called to free some fields of adev. However, when the control flow returns to si_dpm_sw_init, it goes to label dpm_failed and calls si_dpm_fini, which calls amdgpu_free_extended_power_table again and free those fields again. Thus a double-free is triggered.

Affected products

Debian Linux: 10.0
Linux kernel: from 4.9 before 4.19.306; from 4.20 before 5.4.268; from 5.5 before 5.10.209; from 5.11 before 5.15.148; from 5.16 before 6.1.75; from 6.2 before 6.6.14 — fixed in 4.19.306, 5.10.209, 5.15.148, 5.4.268, 6.1.75, 6.6.14

How to fix

Upgrade to a fixed version: Linux kernel 4.19.306, 5.10.209, 5.15.148, 5.4.268. Check the vendor advisory for mitigations.

References

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