{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53520", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:39:39.407Z", "datePublished": "2025-10-01T11:46:07.355Z", "dateUpdated": "2026-05-11T19:46:33.850Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:46:33.850Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix hci_suspend_sync crash\n\nIf hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier\nmay still be accessing it, it can cause the program to crash.\nHere's the call trace:\n <4>[102152.653246] Call Trace:\n <4>[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth]\n <4>[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth]\n <4>[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth]\n <4>[102152.653268] notifier_call_chain+0x43/0x6b\n <4>[102152.653271] __blocking_notifier_call_chain+0x48/0x69\n <4>[102152.653273] __pm_notifier_call_chain+0x22/0x39\n <4>[102152.653276] pm_suspend+0x287/0x57c\n <4>[102152.653278] state_store+0xae/0xe5\n <4>[102152.653281] kernfs_fop_write+0x109/0x173\n <4>[102152.653284] __vfs_write+0x16f/0x1a2\n <4>[102152.653287] ? selinux_file_permission+0xca/0x16f\n <4>[102152.653289] ? security_file_permission+0x36/0x109\n <4>[102152.653291] vfs_write+0x114/0x21d\n <4>[102152.653293] __x64_sys_write+0x7b/0xdb\n <4>[102152.653296] do_syscall_64+0x59/0x194\n <4>[102152.653299] entry_SYSCALL_64_after_hwframe+0x5c/0xc1\n\nThis patch holds the reference count of the hci_dev object while\nprocessing it in hci_suspend_notifier to avoid potential crash\ncaused by the race condition."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_core.c"], "versions": [{"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec", "lessThan": "e1fa25a91091bbed691ba2996a6cee809e3309a2", "status": "affected", "versionType": "git"}, {"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec", "lessThan": "06e2b5ad72b60f90bfe565c201346532e271f484", "status": "affected", "versionType": "git"}, {"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec", "lessThan": "f9c8ce5d665653e3cf71a76349d41d7a7f7947e6", "status": "affected", "versionType": "git"}, {"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec", "lessThan": "573ebae162111063eedc6c838a659ba628f66a0f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_core.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.55", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.5", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.5.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e1fa25a91091bbed691ba2996a6cee809e3309a2"}, {"url": "https://git.kernel.org/stable/c/06e2b5ad72b60f90bfe565c201346532e271f484"}, {"url": "https://git.kernel.org/stable/c/f9c8ce5d665653e3cf71a76349d41d7a7f7947e6"}, {"url": "https://git.kernel.org/stable/c/573ebae162111063eedc6c838a659ba628f66a0f"}], "title": "Bluetooth: Fix hci_suspend_sync crash", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "88F0DAEB-0946-4C4E-B552-34F18C55FDDF", "versionEndExcluding": "6.1.55", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CF71E85-DA24-4925-95C5-E5C15DA71AE6", "versionEndExcluding": "6.5.5", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix hci_suspend_sync crash\n\nIf hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier\nmay still be accessing it, it can cause the program to crash.\nHere's the call trace:\n <4>[102152.653246] Call Trace:\n <4>[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth]\n <4>[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth]\n <4>[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth]\n <4>[102152.653268] notifier_call_chain+0x43/0x6b\n <4>[102152.653271] __blocking_notifier_call_chain+0x48/0x69\n <4>[102152.653273] __pm_notifier_call_chain+0x22/0x39\n <4>[102152.653276] pm_suspend+0x287/0x57c\n <4>[102152.653278] state_store+0xae/0xe5\n <4>[102152.653281] kernfs_fop_write+0x109/0x173\n <4>[102152.653284] __vfs_write+0x16f/0x1a2\n <4>[102152.653287] ? selinux_file_permission+0xca/0x16f\n <4>[102152.653289] ? security_file_permission+0x36/0x109\n <4>[102152.653291] vfs_write+0x114/0x21d\n <4>[102152.653293] __x64_sys_write+0x7b/0xdb\n <4>[102152.653296] do_syscall_64+0x59/0x194\n <4>[102152.653299] entry_SYSCALL_64_after_hwframe+0x5c/0xc1\n\nThis patch holds the reference count of the hci_dev object while\nprocessing it in hci_suspend_notifier to avoid potential crash\ncaused by the race condition."}], "id": "CVE-2023-53520", "lastModified": "2026-04-06T13:13:19.903", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-01T12:15:56.323", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/06e2b5ad72b60f90bfe565c201346532e271f484"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/573ebae162111063eedc6c838a659ba628f66a0f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e1fa25a91091bbed691ba2996a6cee809e3309a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9c8ce5d665653e3cf71a76349d41d7a7f7947e6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: Bluetooth: Fix hci_suspend_sync crash", "id": "2400790", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400790"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53520", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53520\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53520\nhttps://lore.kernel.org/linux-cve-announce/2025100133-CVE-2023-53520-a542@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-10-02T08:38:39.413146+00:00", "updated": "2025-10-02T08:38:39.413200+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}