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[Bug network/20112] sunrpc: stack (frame) overflow in Sun RPC clntudp_call (CVE-2016-4429)
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 18 May 2016 12:01:14 +0000
- Subject: [Bug network/20112] sunrpc: stack (frame) overflow in Sun RPC clntudp_call (CVE-2016-4429)
- Auto-submitted: auto-generated
- References: <bug-20112-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20112
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This was discovered by Aldy Hernandez' alloca plugin for GCC.
Introduced in this commit:
commit b1eab230118c7d65223927486afb7fe0b531bf33
Author: Ulrich Drepper <drepper@redhat.com>
Date: Wed Jan 10 23:47:39 2001 +0000
â
2001-01-10 Jakub Jelinek <jakub@redhat.com>
* sunrpc/clnt_udp.c (clntudp_bufcreate): Set IP_RECVERR on the
UDP socket.
(clntudp_call): Handle MSG_ERRQUEUE.
* sysdeps/generic/errqueue.h: New file.
* sysdeps/unix/sysv/linux/errqueue.h: New file.
I have a patch (replace the alloca with malloc/free).
libtirpc is affected as well.
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