Re: Symbol Collision between ulogd and jansson

[Pablo Neira Ayuso <pablo@netfilter.org>]

Hi,

On Mon, Jan 13, 2025 at 06:41:19AM +0000, 조홍식/책임연구원/SW Security개발실 SW Security TP wrote:
> The issue I would like to bring to your attention is as follows: We
> are using the JSON feature in the PACKAGECONFIG of ulogd, and we
> have discovered that both ulogd and jansson have methods with the
> same name, which can lead to a symbol reference error resulting in a
> segmentation fault.  The method in question is hashtable_del().
> Based on our backtrace analysis, it appears that when ulogd's
> hashtable_del() is executed instead of jansson's hashtable_del(), it
> leads to a segmentation fault (SEGV).
> To avoid this symbol collision, I modified ulogd's hashtable_del()
> to hashtable_delete(), and I have confirmed that this resolves the
> issue.

$ nm -D libjansson.so.4 | grep hashtable_del
$

Are you building a static binary? Otherwise, I don't see how the clash
is going on.

I am fine with this patch, would you submit it using git format-patch
and including Signed-off-by:?

Thanks.