diff options
Diffstat (limited to 'drivers/s390/crypto/zcrypt_api.c')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 52eaf51c9bb6..529ffe26ea9d 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -59,7 +59,6 @@ MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on)."); DEFINE_SPINLOCK(zcrypt_list_lock); LIST_HEAD(zcrypt_card_list); -int zcrypt_device_count; static atomic_t zcrypt_open_count = ATOMIC_INIT(0); static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0); @@ -901,6 +900,9 @@ static long _zcrypt_send_cprb(bool userspace, struct ap_perms *perms, if (xcRB->user_defined != AUTOSELECT && xcRB->user_defined != zc->card->id) continue; + /* check if request size exceeds card max msg size */ + if (ap_msg.len > zc->card->maxmsgsize) + continue; /* check if device node has admission for this card */ if (!zcrypt_check_card(perms, zc->card->id)) continue; @@ -1069,6 +1071,9 @@ static long _zcrypt_send_ep11_cprb(bool userspace, struct ap_perms *perms, if (targets && !is_desired_ep11_card(zc->card->id, target_num, targets)) continue; + /* check if request size exceeds card max msg size */ + if (ap_msg.len > zc->card->maxmsgsize) + continue; /* check if device node has admission for this card */ if (!zcrypt_check_card(perms, zc->card->id)) continue; |