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IP …
high7.8

CVE-2024-35879

In the Linux kernel, the following vulnerability has been resolved: of: dynamic: Synchronize of_changeset_destroy() with the devlink removals In the following …

Impact

In the Linux kernel, the following vulnerability has been resolved: of: dynamic: Synchronize of_changeset_destroy() with the devlink removals In the following sequence: 1) of_platform_depopulate() 2) of_overlay_remove() During the step 1, devices are destroyed and devlinks are removed. During the step 2, OF nodes are destroyed but __of_changeset_entry_destroy() can raise warnings related to missing of_node_put(): ERROR: memory leak, expected refcount 1 instead of 2 ... Indeed, during the devlink removals performed at step 1, the removal itself releasing the device (and the attached of_node) is done by a job queued in a workqueue and so, it is done asynchronously with respect to function calls. When the warning is present, of_node_put() will be called but wrongly too late from the workqueue job. In order to be sure that any ongoing devlink removals are done before the of_node destruction, synchronize the of_changeset_destroy() with the devlink removals.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.10.42 before 5.10.215
from 5.12.9 before 5.13
from 5.13.1 before 5.15.154
from 5.16 before 6.1.85
from 6.2 before 6.6.26
from 6.7 before 6.8.5
DebianDebian Linux
Version 10.0

Weakness classification

CWE-401

References