Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb before 84e3a71d11d8593c127b468d75b2653af5074f81; affected 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb before aa2a4277ad42fd8f918c6dc652473946a253f7b0; affected 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb before 27600805e62f800bacf990354632eae4e487d34c; affected c4ad899a33198ab6335732c769835d035e66894a; affected 6.17.8 before 6.18 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.