{ "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-2024-27398", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-27398", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-05-13T10:22:26.624Z", "updatedAt": "2026-08-05T11:29:32.448Z", "importedAt": "2026-10-24T01:57:07.518Z", "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: Fix use-after-free bugs caused by sco_sock_timeout", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix use-after-free bugs caused by sco_sock_timeout\n\nWhen the sco connection is established and then, the sco socket\nis releasing, timeout_work will be scheduled to judge whether\nthe sco disconnection is timeout. The sock will be deallocated\nlater, but it is dereferenced again in sco_sock_timeout. As a\nresult, the use-after-free bugs will happen. The root cause is\nshown below:\n\n Cleanup Thread | Worker Thread\nsco_sock_release |\n sco_sock_close |\n __sco_sock_close |\n sco_sock_set_timer |\n schedule_delayed_work |\n sco_sock_kill | (wait a time)\n sock_put(sk) //FREE | sco_sock_timeout\n | sock_hold(sk) //USE\n\nThe KASAN report triggered by POC is shown below:\n\n[ 95.890016] ==================================================================\n[ 95.890496] BUG: KASAN: slab-use-after-free in sco_sock_timeout+0x5e/0x1c0\n[ 95.890755] Write of size 4 at addr ffff88800c388080 by task kworker/0:0/7\n...\n[ 95.890755] Workqueue: events sco_sock_timeout\n[ 95.890755] Call Trace:\n[ 95.890755] \n[ 95.890755] dump_stack_lvl+0x45/0x110\n[ 95.890755] print_address_description+0x78/0x390\n[ 95.890755] print_report+0x11b/0x250\n[ 95.890755] ? __virt_addr_valid+0xbe/0xf0\n[ 95.890755] ? sco_sock_timeout+0x5e/0x1c0\n[ 95.890755] kasan_report+0x139/0x170\n[ 95.890755] ? update_load_avg+0xe5/0x9f0\n[ 95.890755] ? sco_sock_timeout+0x5e/0x1c0\n[ 95.890755] kasan_check_range+0x2c3/0x2e0\n[ 95.890755] sco_sock_timeout+0x5e/0x1c0\n[ 95.890755] process_one_work+0x561/0xc50\n[ 95.890755] worker_thread+0xab2/0x13c0\n[ 95.890755] ? pr_cont_work+0x490/0x490\n[ 95.890755] kthread+0x279/0x300\n[ 95.890755] ? pr_cont_work+0x490/0x490\n[ 95.890755] ? kthread_blkcg+0xa0/0xa0\n[ 95.890755] ret_from_fork+0x34/0x60\n[ 95.890755] ? kthread_blkcg+0xa0/0xa0\n[ 95.890755] ret_from_fork_asm+0x11/0x20\n[ 95.890755] \n[ 95.890755]\n[ 95.890755] Allocated by task 506:\n[ 95.890755] kasan_save_track+0x3f/0x70\n[ 95.890755] __kasan_kmalloc+0x86/0x90\n[ 95.890755] __kmalloc+0x17f/0x360\n[ 95.890755] sk_prot_alloc+0xe1/0x1a0\n[ 95.890755] sk_alloc+0x31/0x4e0\n[ 95.890755] bt_sock_alloc+0x2b/0x2a0\n[ 95.890755] sco_sock_create+0xad/0x320\n[ 95.890755] bt_sock_create+0x145/0x320\n[ 95.890755] __sock_create+0x2e1/0x650\n[ 95.890755] __sys_socket+0xd0/0x280\n[ 95.890755] __x64_sys_socket+0x75/0x80\n[ 95.890755] do_syscall_64+0xc4/0x1b0\n[ 95.890755] entry_SYSCALL_64_after_hwframe+0x67/0x6f\n[ 95.890755]\n[ 95.890755] Freed by task 506:\n[ 95.890755] kasan_save_track+0x3f/0x70\n[ 95.890755] kasan_save_free_info+0x40/0x50\n[ 95.890755] poison_slab_object+0x118/0x180\n[ 95.890755] __kasan_slab_free+0x12/0x30\n[ 95.890755] kfree+0xb2/0x240\n[ 95.890755] __sk_destruct+0x317/0x410\n[ 95.890755] sco_sock_release+0x232/0x280\n[ 95.890755] sock_close+0xb2/0x210\n[ 95.890755] __fput+0x37f/0x770\n[ 95.890755] task_work_run+0x1ae/0x210\n[ 95.890755] get_signal+0xe17/0xf70\n[ 95.890755] arch_do_signal_or_restart+0x3f/0x520\n[ 95.890755] syscall_exit_to_user_mode+0x55/0x120\n[ 95.890755] do_syscall_64+0xd1/0x1b0\n[ 95.890755] entry_SYSCALL_64_after_hwframe+0x67/0x6f\n[ 95.890755]\n[ 95.890755] The buggy address belongs to the object at ffff88800c388000\n[ 95.890755] which belongs to the cache kmalloc-1k of size 1024\n[ 95.890755] The buggy address is located 128 bytes inside of\n[ 95.890755] freed 1024-byte region [ffff88800c388000, ffff88800c388400)\n[ 95.890755]\n[ 95.890755] The buggy address belongs to the physical page:\n[ 95.890755] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800c38a800 pfn:0xc388\n[ 95.890755] head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0\n[ 95.890755] ano\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "48669c81a65628ef234cbdd91b9395952c7c27fe", "status": "affected", "versionType": "git", "lessThan": "1b33d55fb7355e27f8c82cd4ecd560f162469249" }, { "version": "37d7ae2b0578f2373674a755402ee722e96edc08", "status": "affected", "versionType": "git", "lessThan": "3212afd00e3cda790fd0583cb3eaef8f9575a014" }, { "version": "a1073aad497d0d071a71f61b721966a176d50c08", "status": "affected", "versionType": "git", "lessThan": "33a6e92161a78c1073d90e27abe28d746feb0a53" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "status": "affected", "versionType": "git", "lessThan": "6a18eeb1b3bbc67c20d9609c31dca6a69b4bcde5" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "status": "affected", "versionType": "git", "lessThan": "bfab2c1f7940a232cd519e82fff137e308abfd93" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "status": "affected", "versionType": "git", "lessThan": "012363cb1bec5f33a7b94629ab2c1086f30280f2" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "status": "affected", "versionType": "git", "lessThan": "50c2037fc28df870ef29d9728c770c8955d32178" }, { "version": "ba316be1b6a00db7126ed9a39f9bee434a508043", "status": "affected", "versionType": "git", "lessThan": "483bc08181827fc475643272ffb69c533007e546" }, { "version": "fea63ccd928c01573306983346588b26cffb5572", "status": "affected", "versionType": "git" }, { "version": "ec1f74319bb35c1c90c25014ec0f6ea6c3ca2134", "status": "affected", "versionType": "git" }, { "version": "b657bba82ff6a007d84fd076bd73b11131726a2b", "status": "affected", "versionType": "git" }, { "version": "4.19.207", "status": "affected", "versionType": "semver", "lessThan": "4.19.314" }, { "version": "5.4.148", "status": "affected", "versionType": "semver", "lessThan": "5.4.276" }, { "version": "5.10.67", "status": "affected", "versionType": "semver", "lessThan": "5.10.217" }, { "version": "4.14.263", "status": "affected", "versionType": "semver", "lessThan": "4.15" }, { "version": "5.13.19", "status": "affected", "versionType": "semver", "lessThan": "5.14" }, { "version": "5.14.6", "status": "affected", "versionType": "semver", "lessThan": "5.15" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.15" }, { "version": "4.19.314", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.276", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.217", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.159", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.91", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.31", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.8.10", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.8.*" }, { "version": "6.9", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }