{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2023-52691","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-07T14:49:46.888Z","datePublished":"2024-05-17T14:24:51.294Z","dateUpdated":"2026-08-05T09:11:04.032Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:11:04.032Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/pm: fix a double-free in si_dpm_init\n\nWhen the allocation of\nadev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries fails,\namdgpu_free_extended_power_table is called to free some fields of adev.\nHowever, when the control flow returns to si_dpm_sw_init, it goes to\nlabel dpm_failed and calls si_dpm_fini, which calls\namdgpu_free_extended_power_table again and free those fields again. Thus\na double-free is triggered."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable path runs in amdgpu PCI probe via amdgpu_device_ip_init → si_dpm_sw_init → si_dpm_init, which is local driver initialization on Southern Islands GPUs, not reachable from network packets or adjacent-link protocols.\nAC:L - A local attacker can induce system-wide memory pressure so the GFP_KERNEL kcalloc fails and force the error path; once that allocation fails, the double-free is deterministic with no uncontrolled race.\nPR:L - Exploitation is assessed from an unprivileged local account on a shared system with an affected AMD SI GPU and amdgpu SI support enabled; root is not required for the attacker’s privileges prior to exploitation under the higher-severity interpretation.\nUI:N - No victim user action such as opening a file or clicking a link is required; the flaw is triggered by driver initialization under attacker-influenced memory conditions.\nS:U - Impact remains within the host kernel’s security authority; this is standard kernel memory corruption / potential privilege escalation, not a VM escape or IOMMU boundary cross.\nC:H - The bug is a kernel double-free of heap objects in amdgpu_free_extended_power_table without pointer clearing, which is memory corruption that can be leveraged for arbitrary read primitives.\nI:H - Double-free freelist corruption in the kernel allocator can be abused for overlapping objects and arbitrary write / control-flow hijacking, enabling full integrity compromise.\nA:H - The double-free reliably causes kernel heap corruption that can oops/panic the kernel or otherwise deny service even when not fully exploited for code 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