{ "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-2024-50150", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-50150", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-11-07T09:31:26.782Z", "updatedAt": "2026-10-15T00:57:14.933Z", "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": "usb: typec: altmode should keep reference to parent", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: altmode should keep reference to parent\n\nThe altmode device release refers to its parent device, but without keeping\na reference to it.\n\nWhen registering the altmode, get a reference to the parent and put it in\nthe release function.\n\nBefore this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues\nlike this:\n\n[ 43.572860] kobject: 'port0.0' (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000)\n[ 43.573532] kobject: 'port0.1' (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000)\n[ 43.574407] kobject: 'port0' (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000)\n[ 43.575059] kobject: 'port1.0' (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000)\n[ 43.575908] kobject: 'port1.1' (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000)\n[ 43.576908] kobject: 'typec' (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000)\n[ 43.577769] kobject: 'port1' (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000)\n[ 46.612867] ==================================================================\n[ 46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129\n[ 46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48\n[ 46.614538]\n[ 46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535\n[ 46.615391] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n[ 46.616042] Workqueue: events kobject_delayed_cleanup\n[ 46.616446] Call Trace:\n[ 46.616648] \n[ 46.616820] dump_stack_lvl+0x5b/0x7c\n[ 46.617112] ? typec_altmode_release+0x38/0x129\n[ 46.617470] print_report+0x14c/0x49e\n[ 46.617769] ? rcu_read_unlock_sched+0x56/0x69\n[ 46.618117] ? __virt_addr_valid+0x19a/0x1ab\n[ 46.618456] ? kmem_cache_debug_flags+0xc/0x1d\n[ 46.618807] ? typec_altmode_release+0x38/0x129\n[ 46.619161] kasan_report+0x8d/0xb4\n[ 46.619447] ? typec_altmode_release+0x38/0x129\n[ 46.619809] ? process_scheduled_works+0x3cb/0x85f\n[ 46.620185] typec_altmode_release+0x38/0x129\n[ 46.620537] ? process_scheduled_works+0x3cb/0x85f\n[ 46.620907] device_release+0xaf/0xf2\n[ 46.621206] kobject_delayed_cleanup+0x13b/0x17a\n[ 46.621584] process_scheduled_works+0x4f6/0x85f\n[ 46.621955] ? __pfx_process_scheduled_works+0x10/0x10\n[ 46.622353] ? hlock_class+0x31/0x9a\n[ 46.622647] ? lock_acquired+0x361/0x3c3\n[ 46.622956] ? move_linked_works+0x46/0x7d\n[ 46.623277] worker_thread+0x1ce/0x291\n[ 46.623582] ? __kthread_parkme+0xc8/0xdf\n[ 46.623900] ? __pfx_worker_thread+0x10/0x10\n[ 46.624236] kthread+0x17e/0x190\n[ 46.624501] ? kthread+0xfb/0x190\n[ 46.624756] ? __pfx_kthread+0x10/0x10\n[ 46.625015] ret_from_fork+0x20/0x40\n[ 46.625268] ? __pfx_kthread+0x10/0x10\n[ 46.625532] ret_from_fork_asm+0x1a/0x30\n[ 46.625805] \n[ 46.625953]\n[ 46.626056] Allocated by task 678:\n[ 46.626287] kasan_save_stack+0x24/0x44\n[ 46.626555] kasan_save_track+0x14/0x2d\n[ 46.626811] __kasan_kmalloc+0x3f/0x4d\n[ 46.627049] __kmalloc_noprof+0x1bf/0x1f0\n[ 46.627362] typec_register_port+0x23/0x491\n[ 46.627698] cros_typec_probe+0x634/0xbb6\n[ 46.628026] platform_probe+0x47/0x8c\n[ 46.628311] really_probe+0x20a/0x47d\n[ 46.628605] device_driver_attach+0x39/0x72\n[ 46.628940] bind_store+0x87/0xd7\n[ 46.629213] kernfs_fop_write_iter+0x1aa/0x218\n[ 46.629574] vfs_write+0x1d6/0x29b\n[ 46.629856] ksys_write+0xcd/0x13b\n[ 46.630128] do_syscall_64+0xd4/0x139\n[ 46.630420] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 46.630820]\n[ 46.630946] Freed by task 48:\n[ 46.631182] kasan_save_stack+0x24/0x44\n[ 46.631493] kasan_save_track+0x14/0x2d\n[ 46.631799] kasan_save_free_info+0x3f/0x4d\n[ 46.632144] __kasan_slab_free+0x37/0x45\n[ 46.632474]\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "2b0b33e8a58388fa9078f0fbe9af1900e6b08879" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "2c15c4133d00f5da632fce60ed013fc31aa9aa58" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "6af43ec3bf40f8b428d9134ffa7a291aecd60da8" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "87474406056891e4fdea0794e1f632b21b3dfa27" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "1ded6b12499e6dee9b0e1ceac633be36538f6fc2" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "68a7c7fe322546be1464174c8d85874b8161deda" }, { "version": "8a37d87d72f0c69f837229c04d2fcd7117ea57e7", "status": "affected", "versionType": "git", "lessThan": "befab3a278c59db0cc88c8799638064f6d3fd6f8" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.19", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.19" }, { "version": "4.19.323", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.285", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.229", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.170", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.115", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.59", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }