Re:Understanding ZFS Channel Programs
by ducktective on Thursday September 09, 2021 @03:32PM
(#28473695)
Try pretty scary
[ Parent
| on HN ]
> Channel Programs may only be run with root privileges
Compare to eBPF, which not only uses a JIT compiler in the kernel, but on popular Linux distributions like Fedora and Ubuntu permits unprivileged users to run eBPF programs.
I would never assume a lack of exploitable bugs in the fork of the Lua interpreter used in FreeBSD, but the fact is that eBPF has seen a steady, if infrequent, stream of actual exploits over the years and in particular unprivileged user exploits.
Re:Understanding ZFS Channel Programs
by throwaway2048 on Friday September 10, 2021 @01:23AM
(#28478080)
lua is significantly MORE powerful than eBPF not less, and correspondingly will be easier to build exploits in.