ionut27001andClaude Opus 5.5 dca67ae477 fix(libkernel): return kern.rng_pseudo in 64-byte blocks as measured on a PS5 ...

In a payload process on a PS5 (firmware 12.70),
sysctlbyname("kern.rng_pseudo") answers a size query with 64 and gives
at most 64 bytes per call, up to a 65536-byte buffer. A buffer smaller
than 64 bytes gets as many bytes as its length and a null length gets
none, both with -1 and ENOMEM; a null buffer with a null length returns
0, and errno is kept when the call succeeds. Here the whole buffer was
filled, a size query threw and the length was never changed. The 64
random bytes are now drawn only for a read that passes both a buffer
and a length.

AI-assisted: yes

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-19 14:49:39 +03:00

..

include

feat(libkernel): stop at start-up on a host CPU without the PS5's extensions

2026-10-14 20:29:57 +13:00

src

fix(libkernel): return kern.rng_pseudo in 64-byte blocks as measured on a PS5

2026-10-19 14:49:39 +03:00