The vmwgfx driver contains a local privilege escalation vulnerability that allows unprivileged users to gain access to files opened by other processes on the system through a dangling 'file' pointer.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://github.com/vmware/photon/wiki/Security-Update-3.0-356 | release notes |
| https://github.com/vmware/photon/wiki/Security-Update-4.0-148 | release notes |
| https://www.openwall.com/lists/oss-security/2022/01/27/4 | third party advisory mailing list |