CVE-2023-54207

// CVE-2023-54207 PoC - Use-After-Free in HID uclogic driver // This PoC demonstrates the vulnerability by triggering device unregistration // Note: Actual exploitation requires specific hardware (Uclogic HID device) #include <linux/hid.h> #include <linux/input.h> #include <linux/module.h> #include <linux/kernel.h> /* Vulnerability trigger mechanism: * 1. The bug is in hid-uclogic.c where input_dev name is allocated * using devm with input_dev reference instead of hid device reference * 2. When input_unregister_device() is called, it triggers uevent * 3. The uevent handler tries to access the already-freed name string * 4. This causes use-after-free condition */ /* Trigger sequence (requires Uclogic device): * 1. Load hid-uclogic driver * 2. Connect Uclogic HID device * 3. Trigger device removal/disconnection * 4. Observe use-after-free in kernel log */ /* Kernel config requirements: * CONFIG_HID_UCLOGIC=y * CONFIG_INPUT=y */ /* Example kernel panic trace expected: * BUG: unable to handle kernel paging request at <address> * Call trace: * send_uevent+0x.../0x... * input_unregister_device+0x.../0x... * hidinput_disconnect+0x.../0x... */

{"cve": {"id": "CVE-2023-54207", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2025-12-30T13:16:08.867", "lastModified": "2026-02-26T18:44:31.897", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: uclogic: Correct devm device reference for hidinput input_dev name\n\nReference the HID device rather than the input device for the devm\nallocation of the input_dev name. Referencing the input_dev would lead to a\nuse-after-free when the input_dev was unregistered and subsequently fires a\nuevent that depends on the name. At the point of firing the uevent, the\nname would be freed by devres management.\n\nUse devm_kasprintf to simplify the logic for allocating memory and\nformatting the input_dev name string."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"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", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1", "versionEndExcluding": "5.10.249", "matchCriteriaId": "4120BE1C-71FD-4111-97D3-CC17592FC110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.199", "matchCriteriaId": "A247FBA6-BEB9-484F-B892-DD5517949CCD"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.53", "matchCriteriaId": "B20754AF-3B8C-4574-A70D-EC24933810E5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.4.16", "matchCriteriaId": "C3039EA3-F6CA-43EF-9F17-81A7EC6841EF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.5.3", "matchCriteriaId": "880C803A-BEAE-4DA0-8A59-AC023F7B4EE3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4c2707dfee5847dc0b5ecfbe512c29c93832fdc4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/51f49e3927ad545cec0c0afb86856ccacd9f085d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/58f0d1c0e494a88f301bf455da7df4366f179bbb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/dd613a4e45f8d35f49a63a2064e5308fa5619e29", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/f283805d984343b2f216e2f4c6c7af265b9542ae", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/f78bb490b16ecb506d4904be4b00bf9aad6588f9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}