From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EED008BEB for ; Tue, 28 Mar 2023 14:48:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70796C433EF; Tue, 28 Mar 2023 14:48:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680014886; bh=UWNUTyopbp++PSvDH2A9A01OLLgAwQsEiVnamn+KmYU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x6fLGYRjb7KUqqQGBTo4UZSzTprFBDwhR3xJjVbz5hbAKsHd2i+VJ/N3hLmdxqaTz UoM2grMYs+ZRdgdgO/RWe37OfeJyY2OIHyAEX/1Thl4R4rjAiUhVDtG13tXtmKwhNB rGlW2XidA6fGx/FTnxVqV7z0Hf1ZAlZDb5k18qvw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, ChenXiaoSong , Namjae Jeon , Steve French , Sasha Levin Subject: [PATCH 6.2 088/240] ksmbd: fix possible refcount leak in smb2_open() Date: Tue, 28 Mar 2023 16:40:51 +0200 Message-Id: <20230328142623.442467184@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230328142619.643313678@linuxfoundation.org> References: <20230328142619.643313678@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: ChenXiaoSong [ Upstream commit 2624b445544ffc1472ccabfb6ec867c199d4c95c ] Reference count of acls will leak when memory allocation fails. Fix this by adding the missing posix_acl_release(). Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3") Signed-off-by: ChenXiaoSong Acked-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/ksmbd/smb2pdu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index b553d93a94eb5..89724cc62299c 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -2996,8 +2996,11 @@ int smb2_open(struct ksmbd_work *work) sizeof(struct smb_acl) + sizeof(struct smb_ace) * ace_num * 2, GFP_KERNEL); - if (!pntsd) + if (!pntsd) { + posix_acl_release(fattr.cf_acls); + posix_acl_release(fattr.cf_dacls); goto err_out; + } rc = build_sec_desc(user_ns, pntsd, NULL, 0, -- 2.39.2