Messages in this thread Patch in this message | | | Date | Tue, 9 Oct 2018 22:17:48 +0200 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH v2] smb2: fix uninitialized variable bug in smb2_ioctl_query_info |
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There is a potential execution path in which variable *resp_buftype* is passed as an argument to function free_rsp_buf(), in which it is used in a comparison without being properly initialized previously.
Fix this by initializing variable *resp_buftype* to -1 in order to avoid unpredictable or unintended results.
Addresses-Coverity-ID: 1473971 ("Uninitialized scalar variable") Fixes: c5d25bdb2967 ("cifs: add IOCTL for QUERY_INFO passthrough to userspace") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> --- Changes in v2: - Fix Coverity and Fixes tag. - Update commit log.
fs/cifs/smb2ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c6c6450d..927aadd 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1133,7 +1133,7 @@ smb2_ioctl_query_info(const unsigned int xid, struct smb_rqst rqst; struct kvec iov[1]; struct kvec rsp_iov; - int resp_buftype; + int resp_buftype = -1; struct smb2_query_info_rsp *rsp = NULL; void *buffer; -- 2.7.4
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