Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: of: unittest: fix use-after-free in of_unittest_changeset() The variable 'parent' is assigned the value of 'nchangeset' earlier in the function, meaning both point to the same struct device_node. The call to of_node_put(nchangeset) can decrement the reference count to zero and free the node if there are no other holders. After that, the code still uses 'parent' to check for the presence of a property and to read a string property, leading to a use-after-free. Fix this by moving the of_node_put() call after the last access to 'parent', avoiding the UAF.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1c668ea65506e67ce2eae07b69bb09fcdd86e309 before 37318d1a27c9cc5a70d3cd7e49e30ec86f2b8ca1; affected 1c668ea65506e67ce2eae07b69bb09fcdd86e309 before 7f0f0926f3010b10cff5e93446258f971e42f2fd; affected 1c668ea65506e67ce2eae07b69bb09fcdd86e309 before 6fdad20b7975bdc32e85b45f8f7c640f6687b81f; affected 1c668ea65506e67ce2eae07b69bb09fcdd86e309 before faecdd423c27f0d6090156a435ba9dbbac0eaddb |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; 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.