CVE-2022-48971: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix not cleanup led when bt_init fails bt_init() calls bt_leds_init() to register led, but if it fails later, bt_leds_cleanup() is not called to unregister it. This can cause panic if the argument "bluetooth-power" in text is freed and then another led_trigger_register() tries to access it: BUG: unable to handle page fault for address: ffffffffc06d3bc0 RIP: 0010:strcmp+0xc/0x30 Call Trace: <TASK> led_trigger_register+0x10d/0x4f0 led_trigger_register_simple+0x7d/0x100 bt_init+0x39/0xf7 [bluetooth] do_one_initcall+0xd0/0x4e0

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.9 — 4.19.269
linux	linux_kernel	4.20 — 5.4.227
linux	linux_kernel	5.5 — 5.10.159
linux	linux_kernel	5.11 — 5.15.83
linux	linux_kernel	5.16 — 6.0.13
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/2c6cf0afc3856359e620e96edd952457d258e16c https://git.kernel.org/stable/c/2f3957c7eb4e07df944169a3e50a4d6790e1c744 https://git.kernel.org/stable/c/5ecf7cd6fde5e72c87122084cf00d63e35d8dd9f https://git.kernel.org/stable/c/8a66c3a94285552f6a8e45d73b34ebbad11d388b https://git.kernel.org/stable/c/e7b950458156d410509a08c41930b75e72985938 https://git.kernel.org/stable/c/edf7284a98296369dd0891a0457eec37df244873

Frequently Asked Questions

What is CVE-2022-48971? +

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix not cleanup led when bt_init fails bt_init() calls bt_leds_init() to register led, but if it fails later, bt_leds_cleanup() is not called to unregister it. This can cause panic if the argument "bluetooth-power" in text is freed and then another led_trigger_register() tries to access it: BUG: unable to handle page fault for address: ffffffffc06d3bc0 RIP: 0010:strcmp+0xc/0x30 Call Trace: <TASK> led_trigger_register+0x10d/0x4f0 led_trigger_register_simple+0x7d/0x100 bt_init+0x39/0xf7 [bluetooth] do_one_initcall+0xd0/0x4e0 It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48971? +

CVE-2022-48971 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-48971? +

CVE-2022-48971 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-48971? +

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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CVE-2022-48971