CVE-2022-48735

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix UAF of leds class devs at unbinding The LED class devices that are created by HD-audio codec drivers are registered via devm_led_classdev_register() and associated with the HD-audio codec device. Unfortunately, it turned out that the devres release doesn't work for this case; namely, since the codec resource release happens before the devm call chain, it triggers a NULL dereference or a UAF for a stale set_brightness_delay callback. For fixing the bug, this patch changes the LED class device register and unregister in a manual manner without devres, keeping the instances in hda_gen_spec.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47	Patch
https://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b	Patch
https://git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8	Patch
https://git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5	Patch
https://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47	Patch
https://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b	Patch
https://git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8	Patch
https://git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-06-20 12:15

Updated : 2024-11-21 07:33

NVD link : CVE-2022-48735

Mitre link : CVE-2022-48735

CVE.ORG link : CVE-2022-48735

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

CWE-476

NULL Pointer Dereference

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