APPLIED: [PATCH 0/2][SRU][X] CVE-2018-20961: USB Gadget MIDI Function UAF

[Kleber Souza]

On 8/15/19 1:21 AM, Tyler Hicks wrote:
> https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-20961.html
> 
>  In the Linux kernel before 4.16.4, a double free vulnerability in the
>  f_midi_set_alt function of drivers/usb/gadget/function/f_midi.c in the
>  f_midi driver may allow attackers to cause a denial of service or
>  possibly have unspecified other impact.
> 
> Clean cherry picks. I'm unable to test without appropriate hardware but
> the the build logs are clean and a test kernel boots without any issues.
> 
> The first patch isn't necessarily required for the CVE fix but the error
> path doesn't work correctly without it. I think it is safe and
> worthwhile to bring back with the CVE fix.
> 
> Tyler
> 
> Felipe F. Tonello (1):
>   usb: gadget: f_midi: fail if set_alt fails to allocate requests
> 
> Yavuz, Tuba (1):
>   USB: gadget: f_midi: fixing a possible double-free in f_midi
> 
>  drivers/usb/gadget/function/f_midi.c | 6 ++++--
>  drivers/usb/gadget/u_f.h             | 2 ++
>  2 files changed, 6 insertions(+), 2 deletions(-)
> 

Applied to xenial/master-next branch.

Thanks,
Kleber