diff options
Diffstat (limited to 'ipv6_sockglue-fix-missing-check-bug-in-ip6_ra_control.patch')
-rw-r--r-- | ipv6_sockglue-fix-missing-check-bug-in-ip6_ra_control.patch | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/ipv6_sockglue-fix-missing-check-bug-in-ip6_ra_control.patch b/ipv6_sockglue-fix-missing-check-bug-in-ip6_ra_control.patch deleted file mode 100644 index e17fc80a6..000000000 --- a/ipv6_sockglue-fix-missing-check-bug-in-ip6_ra_control.patch +++ /dev/null @@ -1,33 +0,0 @@ -From 95baa60a0da80a0143e3ddd4d3725758b4513825 Mon Sep 17 00:00:00 2001 -From: Gen Zhang <blackgod016574@gmail.com> -Date: Fri, 24 May 2019 11:19:46 +0800 -Subject: ipv6_sockglue: Fix a missing-check bug in ip6_ra_control() - -In function ip6_ra_control(), the pointer new_ra is allocated a memory -space via kmalloc(). And it is used in the following codes. However, -when there is a memory allocation error, kmalloc() fails. Thus null -pointer dereference may happen. And it will cause the kernel to crash. -Therefore, we should check the return value and handle the error. - -Signed-off-by: Gen Zhang <blackgod016574@gmail.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - net/ipv6/ipv6_sockglue.c | 2 ++ - 1 file changed, 2 insertions(+) - -diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c -index 40f21fef25ff..0a3d035feb61 100644 ---- a/net/ipv6/ipv6_sockglue.c -+++ b/net/ipv6/ipv6_sockglue.c -@@ -68,6 +68,8 @@ int ip6_ra_control(struct sock *sk, int sel) - return -ENOPROTOOPT; - - new_ra = (sel >= 0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL; -+ if (sel >= 0 && !new_ra) -+ return -ENOMEM; - - write_lock_bh(&ip6_ra_lock); - for (rap = &ip6_ra_chain; (ra = *rap) != NULL; rap = &ra->next) { --- -cgit 1.2-0.3.lf.el7 - |