openbsd-compat/getrrsetbyname.c: answer buffer size too large for EDNS0 and glibc

Darren Tucker dtucker at
Mon Jul 13 11:39:21 EST 2009

Hauke Lampe wrote:
> Damien Miller wrote:
>> No, but doesn't the glibc bug need to be fixed too? There is nothing in
>> the res_query(3) documentation that specifies integer overflow of the
>> length argument.
> I agree. If larger buffers are allowed in res_* arguments, the library
> should cap EDNS0 buffer size at 65535.
> Until a fix for this reaches main distributions, getrrsetbyname should
> work around it, though, IMHO.

Thanks, your patch has been applied and will be in the next release.

Darren Tucker (dtucker at
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