On Sat, Dec 15, 2018 at 06:21:54PM +0100, Loic wrote:
> Hello,
>
> Please picked up this patch for linux 4.4.
> This fixes CVE-2017-18241. This has been fixed in linux 4.9.144.
>
> Thank.
>
> [ Upstream commit d4fdf8ba0e5808ba9ad6b44337783bd9935e0982 ]
>
> From: Yunlei He <heyunlei@xxxxxxxxxx>
> Date: Thu, 1 Jun 2017 16:43:51 +0800
> Subject: [PATCH] f2fs: fix a panic caused by NULL flush_cmd_control
>
> Mount fs with option noflush_merge, boot failed for illegal address
> fcc in function f2fs_issue_flush:
>
> if (!test_opt(sbi, FLUSH_MERGE)) {
> ret = submit_flush_wait(sbi);
> atomic_inc(&fcc->issued_flush); -> Here, fcc illegal
> return ret;
> }
>
> Signed-off-by: Yunlei He <heyunlei@xxxxxxxxxx>
> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> [bwh: Backported to 4.9: adjust context]
> ---
> fs/f2fs/segment.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
Now queued up, thanks.
greg k-h
