CVE-2024-27000

Published: 1 May 2024

In the Linux kernel, the following vulnerability has been resolved: serial: mxs-auart: add spinlock around changing cts state The uart_handle_cts_change() function in serial_core expects the caller to hold uport->lock. For example, I have seen the below kernel splat, when the Bluetooth driver is loaded on an i.MX28 board. [ 85.119255] ------------[ cut here ]------------ [ 85.124413] WARNING: CPU: 0 PID: 27 at /drivers/tty/serial/serial_core.c:3453 uart_handle_cts_change+0xb4/0xec [ 85.134694] Modules linked in: hci_uart bluetooth ecdh_generic ecc wlcore_sdio configfs [ 85.143314] CPU: 0 PID: 27 Comm: kworker/u3:0 Not tainted 6.6.3-00021-gd62a2f068f92 #1 [ 85.151396] Hardware name: Freescale MXS (Device Tree) [ 85.156679] Workqueue: hci0 hci_power_on [bluetooth] (...) [ 85.191765] uart_handle_cts_change from mxs_auart_irq_handle+0x380/0x3f4 [ 85.198787] mxs_auart_irq_handle from __handle_irq_event_percpu+0x88/0x210 (...)

Status

References

• https://www.cve.org/CVERecord?id=CVE-2024-27000
• https://git.kernel.org/linus/54c4ec5f8c471b7c1137a1f769648549c423c026 (6.9-rc5)
• https://git.kernel.org/stable/c/2c9b943e9924cf1269e44289bc5e60e51b0f5270
• https://git.kernel.org/stable/c/5f40fd6ca2cf0bfbc5a5c9e403dfce8ca899ba37
• https://git.kernel.org/stable/c/94b0e65c75f4af888ab2dd6c90f060f762924e86
• https://git.kernel.org/stable/c/54c4ec5f8c471b7c1137a1f769648549c423c026
• NVD
• Launchpad
• Debian