CVE-2024-35879

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxd007150b4e15bfcb8d36cfd88a5645d42e44d383 < 3127b2ee50c424a96eb3559fbb7b43cf0b111c7aaffected
LinuxLinux80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f < 3ee2424107546d882e1ddd75333ca9c32879908caffected
LinuxLinux80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f < 7b6df050c45a1ea158fd50bc32a8e1447dd1e951affected
LinuxLinux80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f < 801c8b8ec5bfb3519566dff16a5ecd48302fca82affected
LinuxLinux80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f < ae6d76e4f06c37a623e357e79d49b17411db6f5caffected
LinuxLinux80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f < 8917e7385346bd6584890ed362985c219fe6ae84affected
LinuxLinux252c23915546863685ecc68cb3a39e7e80c6c9d4affected
LinuxLinux5.10.42 < 5.10.215affected
LinuxLinux5.12.9 < 5.13affected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.10.215 <= 5.10.*unaffected
LinuxLinux5.15.154 <= 5.15.*unaffected
LinuxLinux6.1.85 <= 6.1.*unaffected
LinuxLinux6.6.26 <= 6.6.*unaffected
LinuxLinux6.8.5 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References