This is a note to let you know that I've just added the patch titled
netfilter: nf_nat_sip: fix via header translation with multiple parameters
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
netfilter-nf_nat_sip-fix-via-header-translation-with-multiple-parameters.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From f22eb25cf5b1157b29ef88c793b71972efc47143 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <[email protected]>
Date: Thu, 9 Aug 2012 10:08:47 +0000
Subject: netfilter: nf_nat_sip: fix via header translation with multiple
parameters
From: Patrick McHardy <[email protected]>
commit f22eb25cf5b1157b29ef88c793b71972efc47143 upstream.
Via-headers are parsed beginning at the first character after the Via-address.
When the address is translated first and its length decreases, the offset to
start parsing at is incorrect and header parameters might be missed.
Update the offset after translating the Via-address to fix this.
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Acked-by: David Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/ipv4/netfilter/nf_nat_sip.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -148,7 +148,7 @@ static unsigned int ip_nat_sip(struct sk
if (ct_sip_parse_header_uri(ct, *dptr, NULL, *datalen,
hdr, NULL, &matchoff, &matchlen,
&addr, &port) > 0) {
- unsigned int matchend, poff, plen, buflen, n;
+ unsigned int olen, matchend, poff, plen, buflen, n;
char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
/* We're only interested in headers related to this
@@ -163,11 +163,12 @@ static unsigned int ip_nat_sip(struct sk
goto next;
}
+ olen = *datalen;
if (!map_addr(skb, dataoff, dptr, datalen, matchoff, matchlen,
&addr, port))
return NF_DROP;
- matchend = matchoff + matchlen;
+ matchend = matchoff + matchlen + *datalen - olen;
/* The maddr= parameter (RFC 2361) specifies where to send
* the reply. */
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/netfilter-nf_ct_expect-fix-possible-access-to-uninitialized-timer.patch
queue-3.4/netfilter-nf_nat_sip-fix-via-header-translation-with-multiple-parameters.patch
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