CVE-2026-74535: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: avoid deadlocks in iso_sock_timeout iso_sock_timeout() takes lock_sock, so sync disabling the timer while holding that lock may deadlock. iso_sock_timeout() may also run concurrently with iso_conn_del(), which leads to UAF [Task 1] [Task hdev->workqueue] iso_sock_timeout iso_conn_del iso_conn_hold_unless_zero iso_chan_del `------------> iso_conn_put caller frees hcon iso_conn_put iso_conn_free conn->hcon->iso_data = NULL; /* UAF */ Fix the deadlock by removing the disable from the lock_sock sections. Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn which may need to be freed in lock_sock section. Convert some of the clear_timer to disable_timer.

Засегнати продукти

• Linux Linux: a58d0f5dac322e16cc75334d000666512341bde5 преди 16d89a63e08280abeef7218970a3bbd7ca62b021; dc26097bdb864a0d5955b9a25e43376ffc1af99b преди 82e982f54f962f72646868ddbb2c3bd9ea178568; dc26097bdb864a0d5955b9a25e43376ffc1af99b преди 3c3d5f85db80145636bb991a6005e2760012b985; dc26097bdb864a0d5955b9a25e43376ffc1af99b преди 200fa1629c57a3ca2b03d3ca63fd3a9bfd910c43; f53e7489273dc2bb307bf50f319b3762d45534f0; 6.12.2 преди 6.12.103; 6.11.11 преди 6.12
• Linux Linux: 6.13; преди 6.13; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-74535
• https://nvd.nist.gov/vuln/detail/CVE-2026-74535
• https://git.kernel.org/stable/c/16d89a63e08280abeef7218970a3bbd7ca62b021
• https://git.kernel.org/stable/c/82e982f54f962f72646868ddbb2c3bd9ea178568
• https://git.kernel.org/stable/c/3c3d5f85db80145636bb991a6005e2760012b985
• https://git.kernel.org/stable/c/200fa1629c57a3ca2b03d3ca63fd3a9bfd910c43