This is a note to let you know that I've just added the patch titled
autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
to the 3.19-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:
autofs4-copy_dev_ioctl-keep-the-value-of-size-we-d-used-for-allocation.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0a280962dc6e117e0e4baa668453f753579265d9 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sat, 21 Feb 2015 22:19:57 -0500
Subject: autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
commit 0a280962dc6e117e0e4baa668453f753579265d9 upstream.
X-Coverup: just ask spender
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/autofs4/dev-ioctl.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -95,7 +95,7 @@ static int check_dev_ioctl_version(int c
*/
static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *in)
{
- struct autofs_dev_ioctl tmp;
+ struct autofs_dev_ioctl tmp, *res;
if (copy_from_user(&tmp, in, sizeof(tmp)))
return ERR_PTR(-EFAULT);
@@ -106,7 +106,11 @@ static struct autofs_dev_ioctl *copy_dev
if (tmp.size > (PATH_MAX + sizeof(tmp)))
return ERR_PTR(-ENAMETOOLONG);
- return memdup_user(in, tmp.size);
+ res = memdup_user(in, tmp.size);
+ if (!IS_ERR(res))
+ res->size = tmp.size;
+
+ return res;
}
static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
Patches currently in stable-queue which might be from viro@xxxxxxxxxxxxxxxxxx are
queue-3.19/procfs-fix-race-between-symlink-removals-and-traversals.patch
queue-3.19/debugfs-leave-freeing-a-symlink-body-until-inode-eviction.patch
queue-3.19/autofs4-copy_dev_ioctl-keep-the-value-of-size-we-d-used-for-allocation.patch
queue-3.19/autofs4-wrong-format-for-printing-dentry.patch
queue-3.19/sunrpc-fix-braino-in-poll.patch
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