[Backport v4.0-branch] DNS parsing issues #82289
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If the packet parsing fails in dns_unpack_response_query(), then do not continue further but bail out early. Signed-off-by: Jukka Rissanen <[email protected]> (cherry picked from commit eb2550a)
Make sure we test malformed packet parsing. Signed-off-by: Jukka Rissanen <[email protected]> (cherry picked from commit 6f96915)
Make sure that when copying the qname, the source buffer is large enough for the data. Signed-off-by: Jukka Rissanen <[email protected]> (cherry picked from commit 43c2b9c)
The dns_unpack_answer() did not check the length of the message properly which can cause out of bounds read. Signed-off-by: Jukka Rissanen <[email protected]> (cherry picked from commit 6e7fcff)
Make sure we catch invalid answer during parsing. Signed-off-by: Jukka Rissanen <[email protected]> (cherry picked from commit 16669ec)
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Backport 16669ec~5..16669ec from #82072.
Fixes #82139