214 lines
12 KiB
JSON
214 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2023-53520",
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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": "2025-10-01T11:39:39.407Z",
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"datePublished": "2025-10-01T11:46:07.355Z",
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"dateUpdated": "2026-10-15T21:41:29.915Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:14:36.124Z"
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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\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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable callback is only invoked from the kernel PM notifier chain (system suspend/resume initiated via /sys/power/state, logind, or lid/button events) racing with local HCI device unregistration; there is no over-the-air or network path that reaches hci_suspend_notifier, so the attack must be staged from local system access.\nAC:L - An attacker who can initiate suspend/resume and cause the Bluetooth adapter to unregister (e.g. adding/removing a USB Bluetooth dongle on a shared workstation or kiosk) drives both sides of the race and can retry the suspend/unplug cycle indefinitely until the window is hit.\nPR:L - On typical desktop, laptop and kiosk deployments an unprivileged user in an active local session can request suspend through logind/polkit, and adapter unregistration can be induced without root, so basic local user privileges suffice rather than real root.\nUI:N - The attacker performs both the suspend request and the adapter removal themselves; no action by a separate victim user is needed to reach the racing code paths.\nS:U - The freed hci_dev object and the corrupted memory both live in the kernel's own security authority; exploitation yields kernel-level compromise without crossing a VM, IOMMU or sandbox boundary.\nC:H - Use-after-free of the kzalloc'd hci_dev structure lets an attacker reclaim the slab object and have hci_suspend_sync()/hci_resume_sync() read attacker-influenced or stale kernel data, providing a path to arbitrary kernel memory disclosure.\nI:H - The stale hdev is written to (hdev->suspended, suspend_state, scanning_paused) and its function pointers (hdev->send, hdev->wakeup) and workqueue/mutex members are dereferenced after free, giving heap-spray-based arbitrary write and control-flow hijack potential.\nA:H - The reported failure mode is an outright kernel crash during suspend (hci_suspend_sync oops), and any UAF of this kind reliably panics or hangs the system, denying service across a suspend/resume cycle."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bluetooth/hci_core.c"
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],
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"versions": [
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{
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"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
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"lessThan": "e1fa25a91091bbed691ba2996a6cee809e3309a2",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
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"lessThan": "06e2b5ad72b60f90bfe565c201346532e271f484",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
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"lessThan": "f9c8ce5d665653e3cf71a76349d41d7a7f7947e6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
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"lessThan": "573ebae162111063eedc6c838a659ba628f66a0f",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/bluetooth/hci_core.c"
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],
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"versions": [
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{
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"version": "5.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.7",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.199",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.55",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.5.5",
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"lessThanOrEqual": "6.5.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "5.15.199"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.1.55"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.5.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.6"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e1fa25a91091bbed691ba2996a6cee809e3309a2"
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},
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{
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"url": "https://git.kernel.org/stable/c/06e2b5ad72b60f90bfe565c201346532e271f484"
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},
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{
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"url": "https://git.kernel.org/stable/c/f9c8ce5d665653e3cf71a76349d41d7a7f7947e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/573ebae162111063eedc6c838a659ba628f66a0f"
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}
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],
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"title": "Bluetooth: Fix hci_suspend_sync crash",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2023-53520",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:35:21.506402Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-15T21:41:29.915Z"
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}
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}
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]
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}
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} |