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| author | Todd Kjos <tkjos@google.com> | 2021-10-12 18:56:12 +0200 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2021-10-14 23:19:40 +0200 |
| commit | 29bc22ac5e5bc63275e850f0c8fc549e3d0e306b (patch) | |
| tree | 4a6bac3dec8e0be38062a754ffd015762d197af2 /lib/ts_kmp.c | |
| parent | LSM: Avoid warnings about potentially unused hook variables (diff) | |
| download | linux-29bc22ac5e5bc63275e850f0c8fc549e3d0e306b.tar.xz linux-29bc22ac5e5bc63275e850f0c8fc549e3d0e306b.zip | |
binder: use euid from cred instead of using task
Save the 'struct cred' associated with a binder process
at initial open to avoid potential race conditions
when converting to an euid.
Set a transaction's sender_euid from the 'struct cred'
saved at binder_open() instead of looking up the euid
from the binder proc's 'struct task'. This ensures
the euid is associated with the security context that
of the task that opened binder.
Cc: stable@vger.kernel.org # 4.4+
Fixes: 457b9a6f09f0 ("Staging: android: add binder driver")
Signed-off-by: Todd Kjos <tkjos@google.com>
Suggested-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Suggested-by: Jann Horn <jannh@google.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'lib/ts_kmp.c')
0 files changed, 0 insertions, 0 deletions