This is a note to let you know that I've just added the patch titled
Btrfs:__add_inode_ref: out of bounds memory read when looking for extended ref.
to the 3.10-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:
btrfs-__add_inode_ref-out-of-bounds-memory-read-when-looking-for-extended-ref.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dd9ef135e3542ffc621c4eb7f0091870ec7a1504 Mon Sep 17 00:00:00 2001
From: Quentin Casasnovas <quentin.casasnovas@xxxxxxxxxx>
Date: Tue, 3 Mar 2015 16:31:38 +0100
Subject: Btrfs:__add_inode_ref: out of bounds memory read when looking for extended ref.
From: Quentin Casasnovas <quentin.casasnovas@xxxxxxxxxx>
commit dd9ef135e3542ffc621c4eb7f0091870ec7a1504 upstream.
Improper arithmetics when calculting the address of the extended ref could
lead to an out of bounds memory read and kernel panic.
Signed-off-by: Quentin Casasnovas <quentin.casasnovas@xxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxx>
Signed-off-by: Chris Mason <clm@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/tree-log.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -943,7 +943,7 @@ again:
base = btrfs_item_ptr_offset(leaf, path->slots[0]);
while (cur_offset < item_size) {
- extref = (struct btrfs_inode_extref *)base + cur_offset;
+ extref = (struct btrfs_inode_extref *)(base + cur_offset);
victim_name_len = btrfs_inode_extref_name_len(leaf, extref);
Patches currently in stable-queue which might be from quentin.casasnovas@xxxxxxxxxx are
queue-3.10/btrfs-__add_inode_ref-out-of-bounds-memory-read-when-looking-for-extended-ref.patch
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