{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49059", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.243Z", "datePublished": "2025-02-26T01:54:29.819Z", "dateUpdated": "2026-05-11T18:52:13.929Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:52:13.929Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: add flush_workqueue to prevent uaf\n\nOur detector found a concurrent use-after-free bug when detaching an\nNCI device. The main reason for this bug is the unexpected scheduling\nbetween the used delayed mechanism (timer and workqueue).\n\nThe race can be demonstrated below:\n\nThread-1 Thread-2\n | nci_dev_up()\n | nci_open_device()\n | __nci_request(nci_reset_req)\n | nci_send_cmd\n | queue_work(cmd_work)\nnci_unregister_device() |\n nci_close_device() | ...\n del_timer_sync(cmd_timer)[1] |\n... | Worker\nnci_free_device() | nci_cmd_work()\n kfree(ndev)[3] | mod_timer(cmd_timer)[2]\n\nIn short, the cleanup routine thought that the cmd_timer has already\nbeen detached by [1] but the mod_timer can re-attach the timer [2], even\nit is already released [3], resulting in UAF.\n\nThis UAF is easy to trigger, crash trace by POC is like below\n\n[ 66.703713] ==================================================================\n[ 66.703974] BUG: KASAN: use-after-free in enqueue_timer+0x448/0x490\n[ 66.703974] Write of size 8 at addr ffff888009fb7058 by task kworker/u4:1/33\n[ 66.703974]\n[ 66.703974] CPU: 1 PID: 33 Comm: kworker/u4:1 Not tainted 5.18.0-rc2 #5\n[ 66.703974] Workqueue: nfc2_nci_cmd_wq nci_cmd_work\n[ 66.703974] Call Trace:\n[ 66.703974] \n[ 66.703974] dump_stack_lvl+0x57/0x7d\n[ 66.703974] print_report.cold+0x5e/0x5db\n[ 66.703974] ? enqueue_timer+0x448/0x490\n[ 66.703974] kasan_report+0xbe/0x1c0\n[ 66.703974] ? enqueue_timer+0x448/0x490\n[ 66.703974] enqueue_timer+0x448/0x490\n[ 66.703974] __mod_timer+0x5e6/0xb80\n[ 66.703974] ? mark_held_locks+0x9e/0xe0\n[ 66.703974] ? try_to_del_timer_sync+0xf0/0xf0\n[ 66.703974] ? lockdep_hardirqs_on_prepare+0x17b/0x410\n[ 66.703974] ? queue_work_on+0x61/0x80\n[ 66.703974] ? lockdep_hardirqs_on+0xbf/0x130\n[ 66.703974] process_one_work+0x8bb/0x1510\n[ 66.703974] ? lockdep_hardirqs_on_prepare+0x410/0x410\n[ 66.703974] ? pwq_dec_nr_in_flight+0x230/0x230\n[ 66.703974] ? rwlock_bug.part.0+0x90/0x90\n[ 66.703974] ? _raw_spin_lock_irq+0x41/0x50\n[ 66.703974] worker_thread+0x575/0x1190\n[ 66.703974] ? process_one_work+0x1510/0x1510\n[ 66.703974] kthread+0x2a0/0x340\n[ 66.703974] ? kthread_complete_and_exit+0x20/0x20\n[ 66.703974] ret_from_fork+0x22/0x30\n[ 66.703974] \n[ 66.703974]\n[ 66.703974] Allocated by task 267:\n[ 66.703974] kasan_save_stack+0x1e/0x40\n[ 66.703974] __kasan_kmalloc+0x81/0xa0\n[ 66.703974] nci_allocate_device+0xd3/0x390\n[ 66.703974] nfcmrvl_nci_register_dev+0x183/0x2c0\n[ 66.703974] nfcmrvl_nci_uart_open+0xf2/0x1dd\n[ 66.703974] nci_uart_tty_ioctl+0x2c3/0x4a0\n[ 66.703974] tty_ioctl+0x764/0x1310\n[ 66.703974] __x64_sys_ioctl+0x122/0x190\n[ 66.703974] do_syscall_64+0x3b/0x90\n[ 66.703974] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 66.703974]\n[ 66.703974] Freed by task 406:\n[ 66.703974] kasan_save_stack+0x1e/0x40\n[ 66.703974] kasan_set_track+0x21/0x30\n[ 66.703974] kasan_set_free_info+0x20/0x30\n[ 66.703974] __kasan_slab_free+0x108/0x170\n[ 66.703974] kfree+0xb0/0x330\n[ 66.703974] nfcmrvl_nci_unregister_dev+0x90/0xd0\n[ 66.703974] nci_uart_tty_close+0xdf/0x180\n[ 66.703974] tty_ldisc_kill+0x73/0x110\n[ 66.703974] tty_ldisc_hangup+0x281/0x5b0\n[ 66.703974] __tty_hangup.part.0+0x431/0x890\n[ 66.703974] tty_release+0x3a8/0xc80\n[ 66.703974] __fput+0x1f0/0x8c0\n[ 66.703974] task_work_run+0xc9/0x170\n[ 66.703974] exit_to_user_mode_prepare+0x194/0x1a0\n[ 66.703974] syscall_exit_to_user_mode+0x19/0x50\n[ 66.703974] do_syscall_64+0x48/0x90\n[ 66.703974] entry_SYSCALL_64_after_hwframe+0x44/0x\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/nfc/nci/core.c" ], "versions": [ { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "7d3232214ca4ea8f7d18df264c3b254aa8089d7f", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "9d243aff5f7e6b04e907c617426bbdf26e996ac8", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "1a1748d0dd0f0a98535c6baeef671c8722107639", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "5c63ad2b0a267a524c12c88acb1ba9c2d109a801", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "67677050cecbe0edfdd81cd508415e9636ba7c65", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "9ded5ae40f4fe37fcc28f36d76bf45df20be5432", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "edd4600120641e1714e30112e69a548cfb68e067", "status": "affected", "versionType": "git" }, { "version": "6a2968aaf50c7a22fced77a5e24aa636281efca8", "lessThan": "ef27324e2cb7bb24542d6cb2571740eefe6b00dc", "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/nfc/nci/core.c" ], "versions": [ { "version": "3.2", "status": "affected" }, { "version": "0", "lessThan": "3.2", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.311", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.276", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.239", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.190", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.112", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.35", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.4", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18", "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": "3.2", "versionEndExcluding": "4.9.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "4.14.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "4.19.239" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.4.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.10.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.15.35" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.17.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7d3232214ca4ea8f7d18df264c3b254aa8089d7f" }, { "url": "https://git.kernel.org/stable/c/9d243aff5f7e6b04e907c617426bbdf26e996ac8" }, { "url": "https://git.kernel.org/stable/c/1a1748d0dd0f0a98535c6baeef671c8722107639" }, { "url": "https://git.kernel.org/stable/c/5c63ad2b0a267a524c12c88acb1ba9c2d109a801" }, { "url": "https://git.kernel.org/stable/c/67677050cecbe0edfdd81cd508415e9636ba7c65" }, { "url": "https://git.kernel.org/stable/c/9ded5ae40f4fe37fcc28f36d76bf45df20be5432" }, { "url": "https://git.kernel.org/stable/c/edd4600120641e1714e30112e69a548cfb68e067" }, { "url": "https://git.kernel.org/stable/c/ef27324e2cb7bb24542d6cb2571740eefe6b00dc" } ], "title": "nfc: nci: add flush_workqueue to prevent uaf", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49059", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-27T17:59:20.702464Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T18:02:30.105Z" } } ] } }