From acfea0924b4e8e0a1a890d1151de1e3f39264926 Mon Sep 17 00:00:00 2001 From: Sona Sarmadi Date: Wed, 9 Mar 2016 07:37:32 +0100 Subject: kernel-ipv4: CVE-2015-3636 Fixes use-after-free leading to local privilege escalation. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3636 Upstream fix: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/ patch/?id=8a9a51ba2eff62e1a899daad7b623becfed8f3f1 Signed-off-by: Sona Sarmadi Signed-off-by: Huimin She --- .../linux/linux-qoriq-3.12/CVE-2015-3636.patch | 39 ++++++++++++++++++++++ recipes-kernel/linux/linux-qoriq-common.inc | 1 + 2 files changed, 40 insertions(+) create mode 100644 recipes-kernel/linux/linux-qoriq-3.12/CVE-2015-3636.patch diff --git a/recipes-kernel/linux/linux-qoriq-3.12/CVE-2015-3636.patch b/recipes-kernel/linux/linux-qoriq-3.12/CVE-2015-3636.patch new file mode 100644 index 0000000..516017e --- /dev/null +++ b/recipes-kernel/linux/linux-qoriq-3.12/CVE-2015-3636.patch @@ -0,0 +1,39 @@ +From 8a9a51ba2eff62e1a899daad7b623becfed8f3f1 Mon Sep 17 00:00:00 2001 +From: "David S. Miller" +Date: Fri, 1 May 2015 22:02:47 -0400 +Subject: ipv4: Missing sk_nulls_node_init() in ping_unhash(). + +[ Upstream commit a134f083e79fb4c3d0a925691e732c56911b4326 ] + +If we don't do that, then the poison value is left in the ->pprev +backlink. + +This can cause crashes if we do a disconnect, followed by a connect(). + +Fixes CVE-2015-3636 +Upstream-Status: Backport + +Tested-by: Linus Torvalds +Reported-by: Wen Xu +Signed-off-by: David S. Miller +Signed-off-by: Jiri Slaby +Signed-off-by: Sona Sarmadi +--- + net/ipv4/ping.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c +index a9f8e66..54012b8 100644 +--- a/net/ipv4/ping.c ++++ b/net/ipv4/ping.c +@@ -154,6 +154,7 @@ void ping_unhash(struct sock *sk) + if (sk_hashed(sk)) { + write_lock_bh(&ping_table.lock); + hlist_nulls_del(&sk->sk_nulls_node); ++ sk_nulls_node_init(&sk->sk_nulls_node); + sock_put(sk); + isk->inet_num = 0; + isk->inet_sport = 0; +-- +cgit v0.12 + diff --git a/recipes-kernel/linux/linux-qoriq-common.inc b/recipes-kernel/linux/linux-qoriq-common.inc index 504bbfc..6e77abb 100644 --- a/recipes-kernel/linux/linux-qoriq-common.inc +++ b/recipes-kernel/linux/linux-qoriq-common.inc @@ -24,6 +24,7 @@ SRC_URI += "file://b4860-hard_irq_disable-bug.patch \ file://drivers-scsi-CVE-2015-5707.patch \ file://vhost-CVE-2015-6252.patch \ file://CVE-2015-2922.patch \ + file://CVE-2015-3636.patch \ " SRC_URI += "file://cfg/00013-localversion.cfg \ -- cgit v1.2.3-54-g00ecf