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anqputil: Avoid potential overflow

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When checking that the length is valid, avoid potentially overflowing
    'anqp + l_get_le16(anqp + 2)'
This commit is contained in:
Denis Kenzior 2022-01-14 11:08:48 -06:00
parent d2ca0c4f18
commit 60e0a5073a
1 changed files with 1 additions and 1 deletions
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src/anqputil.c
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@ -48,7 +48,7 @@ bool anqp_iter_next(struct anqp_iter *iter, uint16_t *id, uint16_t *len,
if (iter->pos + 4 >= iter->max) if (iter->pos + 4 >= iter->max)
return false; return false;
if (anqp + l_get_le16(anqp + 2) > end) if (l_get_le16(anqp + 2) > end - anqp)
return false; return false;
*id = l_get_le16(anqp); *id = l_get_le16(anqp);