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sentry/aio: validate nrEvents in io_setup #13518

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sentry/aio: validate nrEvents in io_setup #13518

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4 changes: 4 additions & 0 deletions pkg/sentry/syscalls/linux/sys_aio.go
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,10 @@ func IoSetup(t *kernel.Task, sysno uintptr, args arch.SyscallArguments) (uintptr
nrEvents := args[0].Int()
idAddr := args[1].Pointer()

if nrEvents <= 0 || nrEvents > 65536 {
return 0, nil, linuxerr.EINVAL
}

// Linux uses the native long as the aio ID.
//
// The context pointer _must_ be zero initially.
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