Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: firmware_loader: Fix use-after-free during unregister In the following code within firmware_upload_unregister(), the call to device_unregister() could result in the dev_release function freeing the fw_upload_priv structure before it is dereferenced for the call to module_put(). This bug was found by the kernel test robot using CONFIG_KASAN while running the firmware selftests. device_unregister(&fw_sysfs->dev); module_put(fw_upload_priv->module); The problem is fixed by copying fw_upload_priv->module to a local variable for use when calling device_unregister().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 97730bbb242cde22b7140acd202ffd88823886c9 before d380d40930a674c520a5b55f3be1eb17dc634ebc; affected 97730bbb242cde22b7140acd202ffd88823886c9 before 8b40c38e37492b5bdf8e95b46b5cca9517a9957a |
| Linux / Linux | affected 5.19; unaffected 0 before 5.19; unaffected 5.19.8 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.