This is a note to let you know that I've just added the patch titled
eCryptfs: use after free in ecryptfs_release_messaging()
to the 4.4-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:
ecryptfs-use-after-free-in-ecryptfs_release_messaging.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From db86be3a12d0b6e5c5b51c2ab2a48f06329cb590 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Tue, 22 Aug 2017 23:41:28 +0300
Subject: eCryptfs: use after free in ecryptfs_release_messaging()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit db86be3a12d0b6e5c5b51c2ab2a48f06329cb590 upstream.
We're freeing the list iterator so we should be using the _safe()
version of hlist_for_each_entry().
Fixes: 88b4a07e6610 ("[PATCH] eCryptfs: Public key transport mechanism")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ecryptfs/messaging.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -442,15 +442,16 @@ void ecryptfs_release_messaging(void)
}
if (ecryptfs_daemon_hash) {
struct ecryptfs_daemon *daemon;
+ struct hlist_node *n;
int i;
mutex_lock(&ecryptfs_daemon_hash_mux);
for (i = 0; i < (1 << ecryptfs_hash_bits); i++) {
int rc;
- hlist_for_each_entry(daemon,
- &ecryptfs_daemon_hash[i],
- euid_chain) {
+ hlist_for_each_entry_safe(daemon, n,
+ &ecryptfs_daemon_hash[i],
+ euid_chain) {
rc = ecryptfs_exorcise_daemon(daemon);
if (rc)
printk(KERN_ERR "%s: Error whilst "
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-4.4/ecryptfs-use-after-free-in-ecryptfs_release_messaging.patch