In the Linux kernel, the following vulnerability has been resolved:
maple_tree: fix mas_empty_area_rev() null pointer dereference
Currently the code calls mas_start() followed by mas_data_end() if the
maple state is MA_START, but mas_start() may return with the maple state
node == NULL. This will lead to a null pointer dereference when checking
information in the NULL node, which is done in mas_data_end().
Avoid setting the offset if there is no node by waiting until after the
maple state is checked for an empty or single entry state.
A user could trigger the events to cause a kernel oops by unmapping all
vmas to produce an empty maple tree, then mapping a vma that would cause
the scenario described above.
References
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-30T15:28:57.939Z
Updated: 2024-06-16T12:20:48.705Z
Reserved: 2024-05-30T15:25:07.065Z
Link: CVE-2024-36891
JSON object: View
NVD Information
Status : Modified
Published: 2024-05-30T16:15:12.603
Modified: 2024-06-16T13:15:52.713
Link: CVE-2024-36891
JSON object: View
Redhat Information
No data.
CWE