This is a note to let you know that I've just added the patch titled
gtp: avoid zero size hashtable
to the 4.19-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:
gtp-avoid-zero-size-hashtable.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed 01 Jan 2020 10:36:29 PM CET
From: Taehee Yoo <ap420073@xxxxxxxxx>
Date: Wed, 11 Dec 2019 08:23:48 +0000
Subject: gtp: avoid zero size hashtable
From: Taehee Yoo <ap420073@xxxxxxxxx>
[ Upstream commit 6a902c0f31993ab02e1b6ea7085002b9c9083b6a ]
GTP default hashtable size is 1024 and userspace could set specific
hashtable size with IFLA_GTP_PDP_HASHSIZE. If hashtable size is set to 0
from userspace, hashtable will not work and panic will occur.
Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)")
Signed-off-by: Taehee Yoo <ap420073@xxxxxxxxx>
Signed-off-by: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/gtp.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -671,10 +671,13 @@ static int gtp_newlink(struct net *src_n
if (err < 0)
return err;
- if (!data[IFLA_GTP_PDP_HASHSIZE])
+ if (!data[IFLA_GTP_PDP_HASHSIZE]) {
hashsize = 1024;
- else
+ } else {
hashsize = nla_get_u32(data[IFLA_GTP_PDP_HASHSIZE]);
+ if (!hashsize)
+ hashsize = 1024;
+ }
err = gtp_hashtable_new(gtp, hashsize);
if (err < 0)
Patches currently in stable-queue which might be from ap420073@xxxxxxxxx are
queue-4.19/gtp-avoid-zero-size-hashtable.patch
queue-4.19/gtp-fix-wrong-condition-in-gtp_genl_dump_pdp.patch
queue-4.19/gtp-fix-an-use-after-free-in-ipv4_pdp_find.patch
queue-4.19/gtp-do-not-allow-adding-duplicate-tid-and-ms_addr-pdp-context.patch
