{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-54460", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-54460", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2025-01-11T12:29:53.553Z", "updatedAt": "2026-05-23T15:55:34.210Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Bluetooth: iso: Fix circular lock in iso_listen_bis", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: iso: Fix circular lock in iso_listen_bis\n\nThis fixes the circular locking dependency warning below, by\nreleasing the socket lock before enterning iso_listen_bis, to\navoid any potential deadlock with hdev lock.\n\n[ 75.307983] ======================================================\n[ 75.307984] WARNING: possible circular locking dependency detected\n[ 75.307985] 6.12.0-rc6+ #22 Not tainted\n[ 75.307987] ------------------------------------------------------\n[ 75.307987] kworker/u81:2/2623 is trying to acquire lock:\n[ 75.307988] ffff8fde1769da58 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO)\n at: iso_connect_cfm+0x253/0x840 [bluetooth]\n[ 75.308021]\n but task is already holding lock:\n[ 75.308022] ffff8fdd61a10078 (&hdev->lock)\n at: hci_le_per_adv_report_evt+0x47/0x2f0 [bluetooth]\n[ 75.308053]\n which lock already depends on the new lock.\n\n[ 75.308054]\n the existing dependency chain (in reverse order) is:\n[ 75.308055]\n -> #1 (&hdev->lock){+.+.}-{3:3}:\n[ 75.308057] __mutex_lock+0xad/0xc50\n[ 75.308061] mutex_lock_nested+0x1b/0x30\n[ 75.308063] iso_sock_listen+0x143/0x5c0 [bluetooth]\n[ 75.308085] __sys_listen_socket+0x49/0x60\n[ 75.308088] __x64_sys_listen+0x4c/0x90\n[ 75.308090] x64_sys_call+0x2517/0x25f0\n[ 75.308092] do_syscall_64+0x87/0x150\n[ 75.308095] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 75.308098]\n -> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_ISO){+.+.}-{0:0}:\n[ 75.308100] __lock_acquire+0x155e/0x25f0\n[ 75.308103] lock_acquire+0xc9/0x300\n[ 75.308105] lock_sock_nested+0x32/0x90\n[ 75.308107] iso_connect_cfm+0x253/0x840 [bluetooth]\n[ 75.308128] hci_connect_cfm+0x6c/0x190 [bluetooth]\n[ 75.308155] hci_le_per_adv_report_evt+0x27b/0x2f0 [bluetooth]\n[ 75.308180] hci_le_meta_evt+0xe7/0x200 [bluetooth]\n[ 75.308206] hci_event_packet+0x21f/0x5c0 [bluetooth]\n[ 75.308230] hci_rx_work+0x3ae/0xb10 [bluetooth]\n[ 75.308254] process_one_work+0x212/0x740\n[ 75.308256] worker_thread+0x1bd/0x3a0\n[ 75.308258] kthread+0xe4/0x120\n[ 75.308259] ret_from_fork+0x44/0x70\n[ 75.308261] ret_from_fork_asm+0x1a/0x30\n[ 75.308263]\n other info that might help us debug this:\n\n[ 75.308264] Possible unsafe locking scenario:\n\n[ 75.308264] CPU0 CPU1\n[ 75.308265] ---- ----\n[ 75.308265] lock(&hdev->lock);\n[ 75.308267] lock(sk_lock-\n AF_BLUETOOTH-BTPROTO_ISO);\n[ 75.308268] lock(&hdev->lock);\n[ 75.308269] lock(sk_lock-AF_BLUETOOTH-BTPROTO_ISO);\n[ 75.308270]\n *** DEADLOCK ***\n\n[ 75.308271] 4 locks held by kworker/u81:2/2623:\n[ 75.308272] #0: ffff8fdd66e52148 ((wq_completion)hci0#2){+.+.}-{0:0},\n at: process_one_work+0x443/0x740\n[ 75.308276] #1: ffffafb488b7fe48 ((work_completion)(&hdev->rx_work)),\n at: process_one_work+0x1ce/0x740\n[ 75.308280] #2: ffff8fdd61a10078 (&hdev->lock){+.+.}-{3:3}\n at: hci_le_per_adv_report_evt+0x47/0x2f0 [bluetooth]\n[ 75.308304] #3: ffffffffb6ba4900 (rcu_read_lock){....}-{1:2},\n at: hci_connect_cfm+0x29/0x190 [bluetooth]", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "02171da6e86a73e1b343b36722f5d9d5c04b3539", "status": "affected", "versionType": "git", "lessThan": "c541d7b5e17987ed330798b07d4ad508859c1c93" }, { "version": "02171da6e86a73e1b343b36722f5d9d5c04b3539", "status": "affected", "versionType": "git", "lessThan": "168e28305b871d8ec604a8f51f35467b8d7ba05b" }, { "version": "a6c3af0a620082d191dabc69c4925b3e6c26dd48", "status": "affected", "versionType": "git" }, { "version": "6.8.12", "status": "affected", "versionType": "semver", "lessThan": "6.9" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.9", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.9" }, { "version": "6.12.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }