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0649a6d400
The fix is for the DH_set_length error. As shown in lines 2-5, OpenSSL
3.0 added a check for length, which allowed this issue to be exposed.
```
1 if (dh->params.q == NULL) {
2 /* secret exponent length, must satisfy 2^(l-1) <= p */
3 if (dh->length != 0
4 && dh->length >= BN_num_bits(dh->params.p))
5 goto err;
6 l = dh->length ? dh->length : BN_num_bits(dh->params.p) - 1;
7 if (!BN_priv_rand_ex(priv_key, l, BN_RAND_TOP_ONE,
8 BN_RAND_BOTTOM_ANY, 0, ctx))
9 goto err;
... ...
}
```
---------
Co-authored-by: john <hondaxiao@tencent.com>
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