CVE-2024-27000

HIGH
Published May 1, 2024 Modified Dec 23, 2025

Description

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 (...)

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux
fedoraproject fedora
fedoraproject fedora
fedoraproject fedora

References

Advisories & Patches

https://git.kernel.org/stable/c/0dc0637e6b16158af85945425821bfd0151adb37 https://git.kernel.org/stable/c/21535ef0ac1945080198fe3e4347ea498205c99a https://git.kernel.org/stable/c/2c9b943e9924cf1269e44289bc5e60e51b0f5270 https://git.kernel.org/stable/c/479244d68f5d94f3903eced52b093c1e01ddb495 https://git.kernel.org/stable/c/54c4ec5f8c471b7c1137a1f769648549c423c026 https://git.kernel.org/stable/c/56434e295bd446142025913bfdf1587f5e1970ad https://git.kernel.org/stable/c/5f40fd6ca2cf0bfbc5a5c9e403dfce8ca899ba37 https://git.kernel.org/stable/c/94b0e65c75f4af888ab2dd6c90f060f762924e86 https://git.kernel.org/stable/c/0dc0637e6b16158af85945425821bfd0151adb37 https://git.kernel.org/stable/c/21535ef0ac1945080198fe3e4347ea498205c99a https://git.kernel.org/stable/c/2c9b943e9924cf1269e44289bc5e60e51b0f5270 https://git.kernel.org/stable/c/479244d68f5d94f3903eced52b093c1e01ddb495 https://git.kernel.org/stable/c/54c4ec5f8c471b7c1137a1f769648549c423c026 https://git.kernel.org/stable/c/56434e295bd446142025913bfdf1587f5e1970ad https://git.kernel.org/stable/c/5f40fd6ca2cf0bfbc5a5c9e403dfce8ca899ba37 https://git.kernel.org/stable/c/94b0e65c75f4af888ab2dd6c90f060f762924e86

Frequently Asked Questions

What is CVE-2024-27000? +
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 (...) It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2024-27000? +
CVE-2024-27000 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-27000? +
CVE-2024-27000 affects products from debian, fedoraproject, linux, specifically: debian_linux, fedora, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-27000? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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