diff options
| author | Gustavo A. R. Silva <garsilva@embeddedor.com> | 2017-05-30 22:43:07 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2017-06-23 00:34:56 +0200 |
| commit | 6f874bafacf053b87887f4149fc117e2b1096138 (patch) | |
| tree | 741c3b62f5a3001684a941948966e3890fcefe54 /drivers/nfc/nfcsim.c | |
| parent | nfc: nci: remove unnecessary null check (diff) | |
| download | linux-6f874bafacf053b87887f4149fc117e2b1096138.tar.xz linux-6f874bafacf053b87887f4149fc117e2b1096138.zip | |
NFC: add NULL checks to avoid potential NULL pointer dereference
NULL checks at line 457: if (!link0 || !link1) {, implies that both
pointers link0 and link1 might be NULL.
Function nfcsim_link_free() dereference pointers link0 and link1.
Add NULL checks before calling nfcsim_link_free() to avoid a
potential NULL pointer dereference.
Addresses-Coverity-ID: 1364857
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc/nfcsim.c')
| -rw-r--r-- | drivers/nfc/nfcsim.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c index a466e7978466..33449820e754 100644 --- a/drivers/nfc/nfcsim.c +++ b/drivers/nfc/nfcsim.c @@ -482,8 +482,10 @@ static int __init nfcsim_init(void) exit_err: pr_err("Failed to initialize nfcsim driver (%d)\n", rc); - nfcsim_link_free(link0); - nfcsim_link_free(link1); + if (link0) + nfcsim_link_free(link0); + if (link1) + nfcsim_link_free(link1); return rc; } |