This is a note to let you know that I've just added the patch titled
addrconf: always initialize sysctl table data
to the 4.3-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:
addrconf-always-initialize-sysctl-table-data.patch
and it can be found in the queue-4.3 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 Tue Jan 26 21:35:02 PST 2016
From: WANG Cong <xiyou.wangcong@xxxxxxxxx>
Date: Mon, 21 Dec 2015 10:55:45 -0800
Subject: addrconf: always initialize sysctl table data
From: WANG Cong <xiyou.wangcong@xxxxxxxxx>
[ Upstream commit 5449a5ca9bc27dd51a462de7ca0b1cd861cd2bd0 ]
When sysctl performs restrict writes, it allows to write from
a middle position of a sysctl file, which requires us to initialize
the table data before calling proc_dostring() for the write case.
Fixes: 3d1bec99320d ("ipv6: introduce secret_stable to ipv6_devconf")
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Acked-by: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx>
Tested-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/addrconf.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5349,13 +5349,10 @@ static int addrconf_sysctl_stable_secret
goto out;
}
- if (!write) {
- err = snprintf(str, sizeof(str), "%pI6",
- &secret->secret);
- if (err >= sizeof(str)) {
- err = -EIO;
- goto out;
- }
+ err = snprintf(str, sizeof(str), "%pI6", &secret->secret);
+ if (err >= sizeof(str)) {
+ err = -EIO;
+ goto out;
}
err = proc_dostring(&lctl, write, buffer, lenp, ppos);
Patches currently in stable-queue which might be from xiyou.wangcong@xxxxxxxxx are
queue-4.3/addrconf-always-initialize-sysctl-table-data.patch
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