diff options
| author | Todd Kjos <tkjos@google.com> | 2021-11-10 15:00:25 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-17 09:48:16 +0100 |
| commit | db39f49ee7d50e68bf46796c05d9deae256ce986 (patch) | |
| tree | 87d1ed3b0b8544ab8a41ed3dc925a7014997dabc /drivers/android | |
| parent | fc9c470cd519e5bb37cf4c92603b2d4e604f5b71 (diff) | |
binder: use cred instead of task for getsecid
commit 4d5b5539742d2554591751b4248b0204d20dcc9d upstream.
Use the 'struct cred' saved at binder_open() to lookup
the security ID via security_cred_getsecid(). This
ensures that the security context that opened binder
is the one used to generate the secctx.
Cc: stable@vger.kernel.org # 5.4+
Fixes: ec74136ded79 ("binder: create node flag to request sender's security context")
Signed-off-by: Todd Kjos <tkjos@google.com>
Suggested-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
| -rw-r--r-- | drivers/android/binder.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 228e206aa5b0..47f839bc0234 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -3106,7 +3106,7 @@ static void binder_transaction(struct binder_proc *proc, u32 secid; size_t added_size; - security_task_getsecid(proc->tsk, &secid); + security_cred_getsecid(proc->cred, &secid); ret = security_secid_to_secctx(secid, &secctx, &secctx_sz); if (ret) { return_error = BR_FAILED_REPLY; |