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| author |   mlarkin <mlarkin@openbsd.org> | 2018-09-18 16:02:08 +0000 |
|---|---|---|
| committer | mlarkin <mlarkin@openbsd.org> | 2018-09-18 16:02:08 +0000 |
| commit | 184c804a7bcef546d5d111b9caecc5e1574bd145 (patch) | |
| tree | 889306f7ee18a1b3f378ed212e6588a730598b93 /lib/libcompiler_rt | |
| parent | Start testing the roa backend (test 5) and cleanup tool in general. (diff) | |
| download | wireguard-openbsd-184c804a7bcef546d5d111b9caecc5e1574bd145.tar.xz wireguard-openbsd-184c804a7bcef546d5d111b9caecc5e1574bd145.zip | |
vmm(4): Reset host LDTR on exit for SVM
For SVM machines, the LDT content remains set to that of the guest VM on
exit (as compared to Intel/VMX which resets the LDTR to 0). This fix
ensures the LDT is reset to 0 on SVM exits.
Leaving the LDT set to the guest's choice could allow a malicious process
to escalate its privileges with the help of a malicious VM that they
also are able to run on the machine.
This was reported by Maxime Villard; thanks!
Diffstat (limited to 'lib/libcompiler_rt')
0 files changed, 0 insertions, 0 deletions