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futex: validate pointers

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Matheus
2026-04-06 17:47:23 -03:00
parent ad127fe0d0
commit c5ecdfbdd1
1 changed files with 5 additions and 0 deletions
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kernel-src/sys/syscalls/futex.c
+5
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@@ -41,6 +41,11 @@ syscallret_t syscall_futex(context_t *, uint32_t *futexp, int op, uint32_t value
.ret = -1 .ret = -1
}; };
if (!IS_USER_ADDRESS(tm) || !IS_USER_ADDRESS(futexp)) {
ret.errno = EFAULT;
return ret;
}
if (unlikely(hashtableinit == false)) { if (unlikely(hashtableinit == false)) {
if (unlikely(hashtable_init(&hashtable, 256))) { if (unlikely(hashtable_init(&hashtable, 256))) {
ret.errno = ENOMEM; ret.errno = ENOMEM;