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CVE-2026-64434: Linux, грешка в паметта

8.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref l2cap_chan_timeout() runs asynchronously and accesses chan->conn. If the connection is torn down while the timer is running or pending, chan->conn can be freed, leading to a use-after-free when the timer worker attempts to lock conn->lock: | BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:112 [inline] | BUG: KASAN: slab-use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4456 [inline] | BUG: KASAN: slab-use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:161 [inline] | BUG: KASAN: slab-use-after-free in mutex_lock+0x4f/0xa0 kernel/locking/mutex.c:318 | Write of size 8 at addr ffff8881298d9550 by task kworker/2:1/83 | | CPU: 2 UID: 0 PID: 83 Comm: kworker/2:1 Not tainted 7.1.0-rc6-next-20260601-dirty #6 PREEMPT(full) | Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 | Workqueue: events l2cap_chan_timeout | Call Trace: | <TASK> | instrument_atomic_read_write include/linux/instrumented.h:112 [inline] | atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4456 [inline] | __mutex_trylock_fast kernel/locking/mutex.c:161 [inline] | mutex_lock+0x4f/0xa0 kernel/locking/mutex.c:318 | l2cap_chan_timeout+0x5d/0x1b0 net/bluetooth/l2cap_core.c:422 | process_one_work kernel/workqueue.c:3326 [inline] | process_scheduled_works+0x7c8/0xfb0 kernel/workqueue.c:3409 | worker_thread+0x8a9/0xcf0 kernel/workqueue.c:3490 | kthread+0x346/0x430 kernel/kthread.c:436 | ret_from_fork+0x1a3/0x470 arch/x86/kernel/process.c:158 | ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 | </TASK> | | Allocated by task 320: | l2cap_conn_add+0xa7/0x820 net/bluetooth/l2cap_core.c:7075 | l2cap_connect_cfm+0xdb/0xd70 net/bluetooth/l2cap_core.c:7452 | hci_connect_cfm include/net/bluetooth/hci_c

Засегнати продукти

  • Linux Linux: 3634cbdc2eb414b69ffa752ddbe5e0458518e321 преди 8f90405a4a6f1f1880dc07996b47bf57c712bd8a; e1c100e2d61bd8c718b7d91fe3e050780a9bf72d преди 32d783cafb46ff3ca58e6f9fd62c9c5f35eaf26b; deb8493a8fa599f6c95e2465b12bfdfb7f94a1d9 преди 8922c7940bae9ce4b1736dddb6362370793835c2; 89dec92041717b027216e110599e4f6d6c921b79 преди 91047a4396a8b1857a6f712a90cf33ec0012b189; 50dfec218808b148ab4247b1858031b7a32015c5 преди 0b0e2bf39cf99e458d991b9df253727e036a7d7d; 859d3ace791ed878ae9ba5522c7844d960da8f88 преди d3b739db5dc6f688a60d56da872fabaf65246032; 8c8e620467a7b51562dbcefbd1f09f288d7d710d преди 50c38d9f42a529691e4e67ea9cedf4f0bfc8d277; 8c8e620467a7b51562dbcefbd1f09f288d7d710d преди b66774b48dd98f07254951f74ea6f513efe7ff8b; 7555fd885a0603f50e49a655850a1f2bd8a25398; 5.10.259 преди 5.10.265; 5.15.210 преди 5.15.216; 6.1.176 преди 6.1.183; 6.6.143 преди 6.6.145; 6.12.93 преди 6.12.97; 6.18.35 преди 6.18.39; 7.0.12 преди 7.1
  • Linux Linux: 7.1; преди 7.1; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; 7.2 до *

Вид слабост

История

  • 25 юли 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-64434: Linux, грешка в паметта | freedomonline.bg