Fix CVE-2017-8779:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8779

Patch copied from the bug reporter's 3rd-party repository:

https://github.com/guidovranken/rpcbomb/blob/master/rpcbind_patch.txt

diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c
index 5862c26..e11f61b 100644
--- a/src/rpcb_svc_com.c
+++ b/src/rpcb_svc_com.c
@@ -48,6 +48,7 @@
 #include <rpc/rpc.h>
 #include <rpc/rpcb_prot.h>
 #include <rpc/svc_dg.h>
+#include <rpc/rpc_com.h>
 #include <netconfig.h>
 #include <errno.h>
 #include <syslog.h>
@@ -432,7 +433,7 @@ rpcbproc_taddr2uaddr_com(void *arg, struct svc_req *rqstp /*__unused*/,
 static bool_t
 xdr_encap_parms(XDR *xdrs, struct encap_parms *epp)
 {
-	return (xdr_bytes(xdrs, &(epp->args), (u_int *) &(epp->arglen), ~0));
+	return (xdr_bytes(xdrs, &(epp->args), (u_int *) &(epp->arglen), RPC_MAXDATASIZE));
 }
 
 /*
put type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>refs</a><a class='active' href='/guix/log/gnu/services/docker.scm'>log</a><a href='/guix/tree/gnu/services/docker.scm?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>tree</a><a href='/guix/commit/gnu/services/docker.scm?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>commit</a><a href='/guix/diff/gnu/services/docker.scm?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/docker.scm'>
<input type='hidden' name='id' value='3ae39911d39a93a186495c70fbb2859e3193fb76'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>root</a>/<a href='/guix/log/gnu?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>gnu</a>/<a href='/guix/log/gnu/services?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>services</a>/<a href='/guix/log/gnu/services/docker.scm?id=3ae39911d39a93a186495c70fbb2859e3193fb76'>docker.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/docker.scm?id=3ae39911d39a93a186495c70fbb2859e3193fb76&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-07-13 21:36:41 -0400'>2022-07-13</span></td><td><a href='/guix/commit/gnu/services/docker.scm?id=b33e1a183f6756514e6b6a3b84054a232dbddad4'>services: docker: Fix race condition.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/38432&gt;.

* gnu/packages/patches/containerd-create-pid-file.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add this.
* gnu/packages/docker.scm (containerd)[source]: Add this patch.
* gnu/services/docker.scm
(containerd-shepherd-service): Add #:pid-file and #:pid-file-timeout.
* gnu/services/docker.scm (docker-shepherd-service): Add --containerd flag.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Oleg Pykhalov</td></tr>