Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: of: unittest: fix use-after-free in testdrv_probe() The function testdrv_probe() retrieves the device_node from the PCI device, applies an overlay, and then immediately calls of_node_put(dn). This releases the reference held by the PCI core, potentially freeing the node if the reference count drops to zero. Later, the same freed pointer 'dn' is passed to of_platform_default_populate(), leading to a use-after-free. The reference to pdev->dev.of_node is owned by the device model and should not be released by the driver. Remove the erroneous of_node_put() to prevent premature freeing.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 26409dd045892904b059dc411403e9c8ce7543ca before 0ba03e06f037df704d9b032e36d417633e2326bc; affected 26409dd045892904b059dc411403e9c8ce7543ca before d68347b07b9801791c9eaab8f772770b52b8cd5c; affected 26409dd045892904b059dc411403e9c8ce7543ca before 5b6122a67a295f8a08b7c18d908a1bd974dfaec8; affected 26409dd045892904b059dc411403e9c8ce7543ca before 6b2023286d2c6ed3bf964fb92e34c9c14d42eb69; affected 26409dd045892904b059dc411403e9c8ce7543ca before 07fd339b2c253205794bea5d9b4b7548a4546c56 |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc
- https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c
- https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8
- https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69
- https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56