xXPBSXxandClaude Sonnet 5.5 83f28bd67f fix(libkernel): fail the stat family with EFAULT when the output struct is not writable guest memory ...

fstat, _fstat, sceKernelFstat, stat, lstat, sceKernelStat and _fstatfs
filled the caller's struct in place, or copied into it after a check that
only tests for null, so a pointer into unmapped memory crashed the host.
Fill a local struct and copy it out with a checked write that fails with
EFAULT. FreeBSD 11.4 does the same after the lookup has succeeded:
copyout(&ub, uap->sb) in sys_fstat (sys/kern/kern_descrip.c:1328),
copyout(&sb, uap->ub) in sys_stat (sys/kern/vfs_syscalls.c:2066) and
copyout(sfp, uap->buf) in sys_fstatfs (sys/kern/vfs_syscalls.c:337).

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

2026-10-25 01:08:01 +02:00

..

include

Merge pull request #7299 from qpavyros/codex/windows-named-shm

2026-10-24 19:42:16 +02:00

src

fix(libkernel): fail the stat family with EFAULT when the output struct is not writable guest memory

2026-10-25 01:08:01 +02:00