[GIT PULL] Smack patches for v5.9

[Casey Schaufler]

Hello Linus

Here are three minor fixes to Smack for the v5.9 release.
All were found by automated checkers and have straight forward
resolution.

--
The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:

  Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)

are available in the Git repository at:

  https://github.com/cschaufler/smack-next smack-for-5.9

for you to fetch changes up to 42a2df3e829f3c5562090391b33714b2e2e5ad4a:

  Smack: prevent underflow in smk_set_cipso() (2020-07-27 13:35:12 -0700)

----------------------------------------------------------------
Dan Carpenter (2):
      Smack: fix another vsscanf out of bounds
      Smack: prevent underflow in smk_set_cipso()

Eric Biggers (1):
      Smack: fix use-after-free in smk_write_relabel_self()

 security/smack/smackfs.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)