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CVE-2026-43232: Linux

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 по мрежата, без особени условия, без вход и след действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets When the FarSync T-series card is being detached, the fst_card_info is deallocated in fst_remove_one(). However, the fst_tx_task or fst_int_task may still be running or pending, leading to use-after-free bugs when the already freed fst_card_info is accessed in fst_process_tx_work_q() or fst_process_int_work_q(). A typical race condition is depicted below: CPU 0 (cleanup) | CPU 1 (tasklet) | fst_start_xmit() fst_remove_one() | tasklet_schedule() unregister_hdlc_device()| | fst_process_tx_work_q() //handler kfree(card) //free | do_bottom_half_tx() | card-> //use The following KASAN trace was captured: ================================================================== BUG: KASAN: slab-use-after-free in do_bottom_half_tx+0xb88/0xd00 Read of size 4 at addr ffff88800aad101c by task ksoftirqd/3/32 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcb/0x5d0 ? do_bottom_half_tx+0xb88/0xd00 kasan_report+0xb8/0xf0 ? do_bottom_half_tx+0xb88/0xd00 do_bottom_half_tx+0xb88/0xd00 ? _raw_spin_lock_irqsave+0x85/0xe0 ? __pfx__raw_spin_lock_irqsave+0x10/0x10 ? __pfx___hrtimer_run_queues+0x10/0x10 fst_process_tx_work_q+0x67/0x90 tasklet_action_common+0x1fa/0x720 ? hrtimer_interrupt+0x31f/0x780 handle_softirqs+0x176/0x530 __irq_exit_rcu+0xab/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 ... Allocated by task 41 on cpu 3 at 72.330843s: kasan_save_stack+0x24/0x50 kasan_save_track+0x17/0x60 __kasan_kmalloc+0x7f/0x90 fst_add_one+0x1a5/0x1cd0 local_pci_probe+0xdd/0x190 pci_device_probe+0x341/0x480 really_probe+0x1c6/0x6a0 __driver_probe_device+0x248/0x310 driver_probe_device+0x48/0x210 __device_attach_driver+0x160/0x320 bus_for_each_drv+0x101/0x190 __device_attach+0x

    Засегнати продукти

    • Linux Linux: 51e2d1b84acac39f79cacb60e6e154ce00a9d308 преди cac048ebfbb92d91d719f74b59177cb70a7633b8; 998b4e54f517961d3d75144c088a24423e003005 преди 086131807d119238cd464e5b0845e48d938dfd79; bb1715a6bfb0c57a68524732a376498a2569f016 преди ae894e47e1cd5a6bf8a0423d888c45df8b2b02dc; 2f623aaf9f31de968dea6169849706a2f9be444c преди 337d7b4112a47984ee319171b75b73bab47e7924; 2f623aaf9f31de968dea6169849706a2f9be444c преди 200bdb8d367ca9b478f9c56ebe56411604d55c81; 2f623aaf9f31de968dea6169849706a2f9be444c преди 21d341fe514fd07e345ed264c9eee21cb2061ca2; 2f623aaf9f31de968dea6169849706a2f9be444c преди 04edfdfdfcdefc02408ab670607261b0a0a9a02e; 2f623aaf9f31de968dea6169849706a2f9be444c преди bae8a5d2e759da2e0cba33ab2080deee96a09373; 41798a063fd4721b609e11ad839b6820f5070ca7; b1fe377b43c405b169cffd1b3aa39c1dde16f3ed; ce9dc768767bbe73d2dd330a9075e849cb8a84d4; 0c5f2c7700cb18aeab1574588d3bb9c0454bf228; 024d2a7c8ee5bfe14357f20cf1bbbbcc5d228cc9; 5.10.163 преди 5.10.252; 5.15.86 преди 5.15.202; 6.1.2 преди 6.1.165; 4.9.337 преди 4.10; 4.14.303 преди 4.15; 4.19.270 преди 4.20; 5.4.229 преди 5.5; 6.0.16 преди 6.1
    • Linux Linux: 6.2; преди 6.2; 5.10.252 до 5.10.*; 5.15.202 до 5.15.*; 6.1.165 до 6.1.*; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.16 до 6.18.*; 6.19.6 до 6.19.*; 7.0 до *

    История

    • 6 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-43232: Linux | freedomonline.bg