This Linux kernel change "cifs: fix memory leak in SMB2_read" is included in the Linux 5.1 release. This change is authored by Ronnie Sahlberg <lsahlber [at] redhat.com> on Tue Apr 23 16:39:45 2019 +1000. The commit for this change in Linux stable tree is 05fd5c2 (patch).
cifs: fix memory leak in SMB2_read Commit 088aaf17aa79300cab14dbee2569c58cfafd7d6e introduced a leak where if SMB2_read() returned an error we would return without freeing the request buffer. Cc: Stable <firstname.lastname@example.org> Signed-off-by: Ronnie Sahlberg <email@example.com> Reviewed-by: Pavel Shilovsky <firstname.lastname@example.org> Signed-off-by: Steve French <email@example.com>
There is one line of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.
fs/cifs/smb2pdu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index b8f7262..a37774a 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -3466,6 +3466,7 @@ void smb2_reconnect_server(struct work_struct *work) io_parms->tcon->tid, ses->Suid, io_parms->offset, 0); free_rsp_buf(resp_buftype, rsp_iov.iov_base); + cifs_small_buf_release(req); return rc == -ENODATA ? 0 : rc; } else trace_smb3_read_done(xid, req->PersistentFileId,