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staging: vt6656: fix potential leak in vt6656_hostap_ioctl()

PATCH New Christian Engelmayer 1 participant 1 message May 7, 2014 Staging

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Christian Engelmayer

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PATCH v2 1/1 staging: vt6656: fix potential leak in vt6656_hostap_ioctl()

Commit fb841d67 (staging: vt6656: don't leak 'param' in vt6656_hostap_ioctl() when returning -EOPNOTSUPP) cleaned up direct returns in the ioctl switch statement that leaked already allocated memory. Fix the same issue for VIAWGET_HOSTAPD_SCAN_REQ and VIAWGET_HOSTAPD_MLME that are not supported by this driver. Detected by Coverity - CID 144381.

Signed-off-by Christian Engelmayer <[email protected]>

---
v2: Resend after v1 failed to apply

* rebased against staging-next - commit 09c3fbba (staging: rtl8188eu:
Remove 'u8 *pbuf' from struct recv_buf)
* fixed mua: no multipart, 7bit text/plain us-ascii

Compile tested and applies against branch staging-next of tree git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git

---
 drivers/staging/vt6656/hostap.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
drivers/staging/vt6656/hostap.c +4 -2
index 67ba48b..a0d9fff 100644
@@ -742,7 +742,8 @@ int vt6656_hostap_ioctl(struct vnt_private *pDevice, struct iw_point *p)
 
 	case VIAWGET_HOSTAPD_MLME:
 	    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_MLME \n");
-	    return -EOPNOTSUPP;
+	    ret = -EOPNOTSUPP;
+	    goto out;
 
 	case VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT:
 	    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT \n");

@@ -751,7 +752,8 @@ int vt6656_hostap_ioctl(struct vnt_private *pDevice, struct iw_point *p)
 
 	case VIAWGET_HOSTAPD_SCAN_REQ:
 	    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SCAN_REQ \n");
-	    return -EOPNOTSUPP;
+	    ret = -EOPNOTSUPP;
+	    goto out;
 
 	case VIAWGET_HOSTAPD_STA_CLEAR_STATS:
 	    DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_STA_CLEAR_STATS \n");
Signature · 1 line
1.9.1