368 lines
18 KiB
JSON
368 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2023-52469",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-02-20T12:30:33.297Z",
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"datePublished": "2024-02-25T08:16:33.016Z",
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"dateUpdated": "2026-08-05T09:10:06.350Z"
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:10:06.350Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/amd/pm: fix a use-after-free in kv_parse_power_table\n\nWhen ps allocated by kzalloc equals to NULL, kv_parse_power_table\nfrees adev->pm.dpm.ps that allocated before. However, after the control\nflow goes through the following call chains:\n\nkv_parse_power_table\n |-> kv_dpm_init\n |-> kv_dpm_sw_init\n\t |-> kv_dpm_fini\n\nThe adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its\nfirst free in kv_parse_power_table and causes a use-after-free bug."
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{
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path runs only during amdgpu PCI/DRM device software init (amdgpu_device_ip_init → kv_dpm_sw_init → kv_dpm_init → kv_parse_power_table) on Kabini/Kaveri/Mullins APUs, which is local driver initialization and not reachable via network or adjacent-link protocols.\nAC:L - A local attacker can induce system-wide memory pressure so the GFP_KERNEL kzalloc of struct kv_ps fails; once that allocation fails, the premature kfree of adev->pm.dpm.ps followed by kv_dpm_fini’s second 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 APU and amdgpu CIK support enabled; under the higher-severity interpretation, real root is not required for the attacker’s privileges prior to exploitation (consistent with the sibling si_dpm double-free CVE-2023-52691).\nUI:N - No separate victim 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 as standard kernel heap corruption / potential privilege escalation, with no VM escape, IOMMU bypass, or other security-boundary crossing.\nC:H - The bug is a kernel double-free of the adev->pm.dpm.ps heap object (UAF-class memory corruption); reclaiming the freed slab can yield 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 corrupts kernel heap state and can oops/panic the kernel or otherwise deny service even when not fully exploited for code execution."
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}
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}
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