What is CVE-2024-46706?

CVE-2024-46706 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.2 onward and patched in 6.6.48, 6.10.7 and 6.11. CVE-2024-46706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-46706?

CVE-2024-46706 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-46706?

Yes, CVE-2024-46706 has been patched. Fixed versions include 6.6.48, 6.10.7 and 6.11. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-46706 actively exploited?

CVE-2024-46706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-46706

Medium

In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: mark last busy before uart_add_one_port With "earlycon initcall_debug=1 loglevel=8" in bootargs, kernel sometimes boot hang. It is because normal console still is not ready, but runtime suspend is called, so early console putchar will hang in waiting TRDE set in UARTSTAT. The lpuart driver has auto suspend delay set to 3000ms, but during uart_add_one_port, a child device serial ctrl will added and probed with its pm runtime enabled(see serial_ctrl.c). The runtime suspend call path is: device_add |-> bus_probe_device |->device_initial_probe |->__device_attach |-> pm_runtime_get_sync(dev->parent); |-> pm_request_idle(dev); |-> pm_runtime_put(dev->parent); So in the end, before normal console ready, the lpuart get runtime suspended. And earlycon putchar will hang. To address the issue, mark last busy just after pm_runtime_enable, three seconds is long enough to switch from bootconsole to normal console.

Package Linux Kernel

Published 2024-09-13

Last modified 2024-09-19

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.2 and later are affected. Fixed in 6.6.48, 6.10.7, 6.11 and their respective stable series.

Affected from

≥ 6.2

Fixed in

✓ 6.6.48 6.6.x ✓ 6.10.7 6.10.x ✓ 6.11

References

3 total

Kernel Git
https://git.kernel.org/stable/c/3ecf625d4acb71d726bc0b49403cf68388b3d58d

Patch
Kernel Git
https://git.kernel.org/stable/c/8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68

Patch
Kernel Git
https://git.kernel.org/stable/c/dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c

Patch

Details

CVE ID CVE-2024-46706

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-09-13

Modified 2024-09-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-46706?

CVE-2024-46706 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.2 onward and has been patched in 6.6.48, 6.10.7 and 6.11. CVE-2024-46706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-46706?

CVE-2024-46706 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-46706?

Yes. CVE-2024-46706 has been patched. Fixed versions include 6.6.48, 6.10.7 and 6.11. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-46706 actively exploited?

No. CVE-2024-46706 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.