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I guess there are no known security issues but they are speculating that the vDSO mechanisms may have not-yet-discovered bugs in them. The idea is just having
by exDM69 11y ago
I guess there are no known security issues but they are speculating that the vDSO mechanisms may have not-yet-discovered bugs in them.
The idea is just having a special page that is mapped as read-only in userspace and kernel writable. If it's correctly implemented, it should be safe.
- gpvos 11y agoI guess they just see every extra interface between kernel and userland as another attack surface and therefore to be avoided.