feat: add two more kernel arguments#1587
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RoyalOughtness merged 3 commits intosecureblue:livefrom Nov 9, 2025
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* `proc_mem.force_override=ptrace`: Prevent processes from modifying memory mappings via `/proc/<pid>/mem` unless the process is attached via ptrace. * `bdev_allow_write_mounted=0`: Prevent direct writes to block devices, which in most circumstances is likely to cause filesystem corruption. Thanks to raja-grewal for suggesting these. Signed-off-by: Daniel Hast <[email protected]>
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linking docs for reference also, bdev_allow_write_mounted=0 can break stuff. might be worth making it unstable? |
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That's a good point, I agree it would make sense to make Should we also start out with |
HastD
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@HastD yeah I agree, proc_mem.force_override=ptrace seems like it shouldn't be too problematic |
RoyalOughtness
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Nov 7, 2025
EsseLowNitro
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Nov 9, 2025
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proc_mem.force_override=ptrace: Prevent processes from modifying memory mappings via/proc/<pid>/memunless the process is attached via ptrace.bdev_allow_write_mounted=0: Prevent direct writes to block devices, which in most circumstances is likely to cause filesystem corruption. Added to unstable (not default) kargs.Thanks to @raja-grewal for suggesting these (in #1393).