7.8

CVE-2024-43830

In the Linux kernel, the following vulnerability has been resolved:

leds: trigger: Unregister sysfs attributes before calling deactivate()

Triggers which have trigger specific sysfs attributes typically store
related data in trigger-data allocated by the activate() callback and
freed by the deactivate() callback.

Calling device_remove_groups() after calling deactivate() leaves a window
where the sysfs attributes show/store functions could be called after
deactivation and then operate on the just freed trigger-data.

Move the device_remove_groups() call to before deactivate() to close
this race window.

This also makes the deactivation path properly do things in reverse order
of the activation path which calls the activate() callback before calling
device_add_groups().
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Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.19 < 4.19.320
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.282
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.224
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.165
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.103
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.44
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.3
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.01% 0.012
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.