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Add documentation on sysctl kernel.panic_on_oops=1

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Raja Grewal 2024-07-25 10:26:23 +10:00
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README.md
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@ -41,6 +41,9 @@ space, user space, core dumps, and swap space.
- Restrict kernel profiling and the performance events system to `CAP_PERFMON`. - Restrict kernel profiling and the performance events system to `CAP_PERFMON`.
- Force the kernel to panic on "oopses" that can potentially indicate and thwart
certain kernel exploitation attempts.
- Randomize the addresses (ASLR) for mmap base, stack, VDSO pages, and heap. - Randomize the addresses (ASLR) for mmap base, stack, VDSO pages, and heap.
- Disable asynchronous I/O as `io_uring` has been the source - Disable asynchronous I/O as `io_uring` has been the source

11
usr/lib/sysctl.d/990-security-misc.conf
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@ -109,6 +109,17 @@ kernel.sysrq=0
## ##
kernel.perf_event_paranoid=3 kernel.perf_event_paranoid=3
## Force the kernel to panic on "oopses".
## Can sometimes potentially indicate and thwart certain kernel exploitation attempts.
## Also cause panics on machine check exceptions.
## Panics may be due to false-positives such as bad drivers.
##
## https://forums.whonix.org/t/set-oops-panic-kernel-parameter-or-kernel-panic-on-oops-1-sysctl-for-better-security/7713
##
## See /usr/libexec/security-misc/panic-on-oops for implementation.
##
#kernel.panic_on_oops=1
## Enable ASLR for mmap base, stack, VDSO pages, and heap. ## Enable ASLR for mmap base, stack, VDSO pages, and heap.
## Heap randomization can lead to breakages with legacy applications. ## Heap randomization can lead to breakages with legacy applications.
## ##