In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths Vulnerabilities leading to Use-After-Free (UAF) and Null Pointer Dereference (NPD) conditions were observed in the lifecycle management of hci_uart. The primary issue arises because the workqueues (init_ready and write_work) are only flushed/cancelled if the HCI_UART_PROTO_READY flag is set during TTY close. If a hangup occurs before setup completes, hci_uart_tty_close() skips the teardown of these workqueues and proceeds to free the `hu` struct. When...
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths Vulnerabilities leading to Use-After-Free (UAF) and Null Pointer Dereference (NPD) conditions were observed in the lifecycle management of hci_uart. The primary issue arises because the workqueues (init_ready and write_work) are only flushed/cancelled if the HCI_UART_PROTO_READY flag is set during TTY close. If a hangup occurs before setup completes, hci_uart_tty_close() skips the teardown of these workqueues and proceeds to free the `hu` struct. When...
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 3b799254cf6f481460719023d7a18f46651e5e7f < 78aad93e938f013d9272fe0ee168f27883afa95c, >= 3b799254cf6f481460719023d7a18f46651e5e7f < e2d19969c8d9198ecc3090bcd5312ecd503a3339, >= 3b799254cf6f481460719023d7a18f46651e5e7f < c85cff648a2bc92322912db5f1727ad05afae7b6, >= 3b799254cf6f481460719023d7a18f46651e5e7f < 9d20d48be2c4a071fb015eb09bda2cecd25daf34, >= 3b799254cf6f481460719023d7a18f46651e5e7f < 81c7a3c22a0f2808cf4ae0b4908f59763b23606d, >= 3b799254cf6f481460719023d7a18f46651e5e7f < 192cb0f1ca706d9a1bc36ae0ad5f666d1e4fd894, >= 3b799254cf6f481460719023d7a18f46651e5e7f < 7338031946bd06f6dff149e67b60c4cd083bfea8, >= 3b799254cf6f481460719023d7a18f46651e5e7f < c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b, >= cd27019bc149f20f12ebec943c2b4c775745a5a0, >= aea63181b6fcb6b9ccde1ada9ea51be19c4015af, >= 0d234d1135dcd8876de0576dac68efd0a87eef87, >= 3fe978892ab46efc2f3830d9abc015eff72caaf9, >= 0d987e14bebaf0f67ee7dbefaf6165c62cd1d27f, >= 4.14.203 < 4.15, >= 4.19.153 < 4.20, >= 5.4.73 < 5.5, >= 5.8.17 < 5.9, >= 5.9.2 < 5.10, >= 5.10, >= 5.9.2 < 5.10.258)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
제3자 참조와 수정 버전 값(4.15, 4.20, 5.5, 5.9, 5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11)은 보조 근거로만 사용하고, 공급사 공식 보안 권고에서 조치 기준을 재확인합니다.
조치 후 확인사항
패치 후 같은 명령으로 전체 버전을 다시 확인해 Linux Linux, linux kernel 4.15, 4.20, 5.5, 5.9, 5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11 기준을 충족하는지 확인합니다. 이어서 경쟁 조건·TOCTOU 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
