Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
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 storerelated data in trigger-data allocated by the activate() callback andfreed by the deactivate() callback.Calling device_remove_groups() after calling deactivate() leaves a windowwhere the sysfs attributes show/store functions could be called afterdeactivation and then operate on the just freed trigger-data.Move the device_remove_groups() call to before deactivate() to closethis race window.This also makes the deactivation path properly do things in reverse orderof the activation path which calls the activate() callback before callingdevice_add_groups().
No PoCs from references.
- https://github.com/fkie-cad/nvd-json-data-feeds