جزئیات آسیب‌پذیری
CVE-2026-23461
Bluetooth: L2CAP: Fix use-after-free in l2cap_unregister_user
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_unregister_user After commit ab4eedb790ca ("Bluetooth: L2CAP: Fix corrupted list in hci_chan_del"), l2cap_conn_del() uses conn->lock to protect access to conn->users. However, l2cap_register_user() and l2cap_unregister_user() don't use conn->lock, creating a race condition where these functions can access conn->users and conn->hchan concurrently with l2cap_conn_del(). This can lead to use-after-free and list corruption bugs, as reported by syzbot. Fix this by changing l2cap_register_user() and l2cap_unregister_user() to use conn->lock instead of hci_dev_lock(), ensuring consistent locking for the l2cap_conn structure.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 8.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Linux | Linux | 18ab6b6078fa8191ca30a3065d57bf35d5635761 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.14 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.12.20 ≤ v < 6.12.78 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.13.8 ≤ v < 6.14 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.6.84 ≤ v < 6.6.130 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ab4eedb790cae44313759b50fe47da285e2519d5 ≤ v < da3000cbe4851458a22be38bb18c0689c39fdd5f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ab4eedb790cae44313759b50fe47da285e2519d5 ≤ v < 71030f3b3015a412133a805ff47970cdcf30c2b8 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ab4eedb790cae44313759b50fe47da285e2519d5 ≤ v < 752a6c9596dd25efd6978a73ff21f3b592668f4a | CVEProject cvelistV5 (CNA) |
| Linux | Linux | efc30877bd4bc85fefe98d80af60fafc86e5775e ≤ v < 11a87dd5df428a4b79a84d2790cac7f3c73f1f0d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | f87271d21dd4ee83857ca11b94e7b4952749bbae ≤ v < c22a5e659959eb77c2fbb58a5adfaf3c3dab7abf | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۵- https://git.kernel.org/stable/c/11a87dd5df428a4b79a84d2790cac7f3c73f1f0d
- https://git.kernel.org/stable/c/c22a5e659959eb77c2fbb58a5adfaf3c3dab7abf
- https://git.kernel.org/stable/c/da3000cbe4851458a22be38bb18c0689c39fdd5f
- https://git.kernel.org/stable/c/71030f3b3015a412133a805ff47970cdcf30c2b8
- https://git.kernel.org/stable/c/752a6c9596dd25efd6978a73ff21f3b592668f4a
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۱/۱۴
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')