ACK: [PATCH 0/2] [bionic, eoan] CVE-2019-19768

[Stefan Bader]

On 31.03.20 14:44, Benjamin M Romer wrote:
> In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the
> __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill
> out a blk_io_trace structure and place it in a per-cpu sub-buffer).
> 
> Cengiz Can (1):
>   blktrace: fix dereference after null check
> 
> Jan Kara (1):
>   blktrace: Protect q->blk_trace with RCU
> 
>  include/linux/blkdev.h       |   2 +-
>  include/linux/blktrace_api.h |  18 ++++--
>  kernel/trace/blktrace.c      | 117 +++++++++++++++++++++++++----------
>  3 files changed, 100 insertions(+), 37 deletions(-)
> 
Acked-by: Stefan Bader <stefan.bader at canonical.com>

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