CVE-2023-52864

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This might cause memory corruption should\nwmi_char_open() be unable to find its driver, something which can\nhappen when the associated WMI device is deleted in wmi_free_devices().\n\nFix the problem by using the miscdevice pointer to retrieve the WMI\ndevice data associated with a char device using container_of(). This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached by opening the local misc char device `/dev/wmi/$driver` (typically `/dev/wmi/dell-smbios`): open \u2192 misc_open \u2192 wmi_char_open. There is no network or adjacent-link path into this platform/x86 WMI code.\nAC:H - Memory corruption requires wmi_char_open() to fail its driver lookup while misc_open still succeeds, which the fix ties to wmi_free_devices() list_del before misc_deregister\u2014i.e. concurrent ACPI/platform WMI removal (e.g. rmmod wmi). An unprivileged attacker can spam open/ioctl but cannot induce that privileged teardown, matching other module-unload races scored AC:H.\nPR:L - The char device is registered with mode 0444, so any local unprivileged user can open it and issue read/ioctl; no init-namespace root or capability is required on the attacker\u2019s side of the race.\nUI:N - The attacker opens and operates on the WMI char device in their own process; no victim action is required. Concurrent administrative device removal is Attack Complexity, not User Interaction.\nS:U - Type confusion / use-after-free stays inside the host kernel\u2019s WMI/misc authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Failed lookup leaves filp->private_data as a miscdevice* that read/ioctl treat as struct wmi_block, causing out-of-bounds reads of adjacent heap; if the wblock is freed while the fd is held this becomes a UAF disclosure primitive, scored High per kernel guidance.\nI:H - The same type confusion/UAF makes wmi_ioctl() mutex_lock, dereference handler_data, and copy_from_user() through misinterpreted pointers\u2014yielding heap corruption and an arbitrary-write primitive after reclaim, so Integrity is High.\nA:H - Misinterpreting a miscdevice as a wmi_block (or using a freed wblock) reliably leads to invalid memory access, oops/panic, or hang on corrupted locks; any such kernel crash/UAF is Availability High."}]}], "affected": [{"product": "Linux", 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"44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "36d85fa7ae0d6be651c1a745191fa7ef055db43e", "status": "affected", "versionType": "git"}, {"version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "fb7b06b59c6887659c6ed0ecd3110835eecbb6a3", "status": "affected", "versionType": "git"}, {"version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "eba9ac7abab91c8f6d351460239108bef5e7a0b6", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/platform/x86/wmi.c"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.299", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.261", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, 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"https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203"}, {"url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"}, {"url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"}, {"url": "https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e"}, {"url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"}, {"url": "https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3"}, {"url": "https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6"}], "title": "platform/x86: wmi: Fix opening of char device", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-52864", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-22T18:21:10.578430Z"}}}], 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There is no network or adjacent-link path into this platform/x86 WMI code.\nAC:H - Memory corruption requires wmi_char_open() to fail its driver lookup while misc_open still succeeds, which the fix ties to wmi_free_devices() list_del before misc_deregister\u2014i.e. concurrent ACPI/platform WMI removal (e.g. rmmod wmi). An unprivileged attacker can spam open/ioctl but cannot induce that privileged teardown, matching other module-unload races scored AC:H.\nPR:L - The char device is registered with mode 0444, so any local unprivileged user can open it and issue read/ioctl; no init-namespace root or capability is required on the attacker\u2019s side of the race.\nUI:N - The attacker opens and operates on the WMI char device in their own process; no victim action is required. Concurrent administrative device removal is Attack Complexity, not User Interaction.\nS:U - Type confusion / use-after-free stays inside the host kernel\u2019s WMI/misc authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Failed lookup leaves filp->private_data as a miscdevice* that read/ioctl treat as struct wmi_block, causing out-of-bounds reads of adjacent heap; if the wblock is freed while the fd is held this becomes a UAF disclosure primitive, scored High per kernel guidance.\nI:H - The same type confusion/UAF makes wmi_ioctl() mutex_lock, dereference handler_data, and copy_from_user() through misinterpreted pointers\u2014yielding heap corruption and an arbitrary-write primitive after reclaim, so Integrity is High.\nA:H - Misinterpreting a miscdevice as a wmi_block (or using a freed wblock) reliably leads to invalid memory access, oops/panic, or hang on corrupted locks; any such kernel crash/UAF is Availability High."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "cf098e937dd125c0317a0d6f261ac2a950a233d6", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "d426a2955e45a95b2282764105fcfb110a540453", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "e0bf076b734a2fab92d8fddc2b8b03462eee7097", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "44a96796d25809502c75771d40ee693c2e44724e", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "36d85fa7ae0d6be651c1a745191fa7ef055db43e", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "fb7b06b59c6887659c6ed0ecd3110835eecbb6a3", "versionType": "git"}, {"status": "affected", "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9", "lessThan": "eba9ac7abab91c8f6d351460239108bef5e7a0b6", "versionType": "git"}], "programFiles": ["drivers/platform/x86/wmi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"status": "unaffected", "version": "0", "lessThan": "4.15", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.299", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.261", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.201", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.139", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.63", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.5.12", "versionType": "semver", "lessThanOrEqual": "6.5.*"}, {"status": "unaffected", "version": "6.6.2", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/platform/x86/wmi.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6"}, {"url": "https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203"}, {"url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"}, {"url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"}, {"url": "https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e"}, {"url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"}, {"url": "https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3"}, {"url": "https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: wmi: Fix opening of char device\n\nSince commit fa1f68db6ca7 (\"drivers: misc: pass miscdevice pointer via\nfile private data\"), the miscdevice stores a pointer to itself inside\nfilp->private_data, which means that private_data will not be NULL when\nwmi_char_open() is called. 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This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.299", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.261", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.201", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.139", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.63", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.5.12", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.2", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7", "versionStartIncluding": "4.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:43.009Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52864", "state": "PUBLISHED", "dateUpdated": "2026-08-05T09:11:43.009Z", "dateReserved": "2024-05-21T15:19:24.261Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:31:55.875Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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This might cause memory corruption should\nwmi_char_open() be unable to find its driver, something which can\nhappen when the associated WMI device is deleted in wmi_free_devices().\n\nFix the problem by using the miscdevice pointer to retrieve the WMI\ndevice data associated with a char device using container_of(). This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: plataforma/x86: wmi: corrige la apertura del dispositivo char. Desde la confirmaci\u00f3n fa1f68db6ca7 (\"drivers: misc: pasar el puntero del dispositivo misc a trav\u00e9s de datos privados del archivo\"), el dispositivo misc almacena un puntero a s\u00ed mismo en su interior. filp->private_data, lo que significa que private_data no ser\u00e1 NULL cuando se llame a wmi_char_open(). Esto podr\u00eda causar da\u00f1os en la memoria si wmi_char_open() no puede encontrar su controlador, algo que puede suceder cuando el dispositivo WMI asociado se elimina en wmi_free_devices(). Solucione el problema utilizando el puntero miscdevice para recuperar los datos del dispositivo WMI asociados con un dispositivo char usando container_of(). Esto tambi\u00e9n evita que wmi_char_open() seleccione un dispositivo WMI incorrecto vinculado a un controlador con el mismo nombre que el controlador original."}], "id": "CVE-2023-52864", "lastModified": "2026-08-04T10:18:46.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52864", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-22T18:21:10.578430Z", "version": "2.0.3"}}]}, "published": "2024-05-21T16:15:23.317", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5692", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.119.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:5692", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.119.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:5692", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.119.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:6993", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.74.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5364", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.79.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-14T00:00:00Z"}, {"advisory": "RHSA-2024:5365", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.79.1.rt14.364.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-14T00:00:00Z"}], "bugzilla": {"description": "kernel: platform/x86: wmi: Fix opening of char device", "id": "2282719", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282719"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-402", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nplatform/x86: wmi: Fix opening of char device\nSince commit fa1f68db6ca7 (\"drivers: misc: pass miscdevice pointer via\nfile private data\"), the miscdevice stores a pointer to itself inside\nfilp->private_data, which means that private_data will not be NULL when\nwmi_char_open() is called. This might cause memory corruption should\nwmi_char_open() be unable to find its driver, something which can\nhappen when the associated WMI device is deleted in wmi_free_devices().\nFix the problem by using the miscdevice pointer to retrieve the WMI\ndevice data associated with a char device using container_of(). This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."], "name": "CVE-2023-52864", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52864\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52864\nhttps://lore.kernel.org/linux-cve-announce/2024052118-CVE-2023-52864-15cd@gregkh/T"], "threat_severity": "Moderate"}

{}