CVE-2026-46275

Vulnerability overview

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...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 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

Fixed versions

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

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-362