From nobody Mon Feb 9 18:46:07 2026 Received: from forwardcorp1b.mail.yandex.net (forwardcorp1b.mail.yandex.net [178.154.239.136]) (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 CC65B2C029A; Thu, 30 Oct 2025 07:43:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.154.239.136 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761810245; cv=none; b=je8MsLI3k9LSgVLGcev4QaXvzoucBbA7ZA0GFurF4ATI5HTtCo7CHLcfTqSgSzm/dntZBxOFcy+eCGIKBqIloFmCECz+wvrTn/DHIu0sV2dj6Wp9CFiWdZS0hibVJJ9/zoSBExcdVTXQ2mbQxOWXol/2jxsVXUjV4P+i6LeZpJM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761810245; c=relaxed/simple; bh=kxq9qjSwI/euAspvdW8LIPsGMx60Il7SC5u0QaAHm58=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=SQ8LtZsaqgBEvU5tHUF+99ntF34P3XPUWxZmWT7sO+aO1xBML9UyvOWvvtXpzws3H5PdF1PKObh+g2dHppE9OlghPJz6WLHBAjkbTsmlUQwdaqCEmIg2oY/eGGwMdU/I8x9ftcVFsq36fk7CD/Gl0n7urg9WGJIzuX0HId0hhrQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yandex-team.ru; spf=pass smtp.mailfrom=yandex-team.ru; dkim=pass (1024-bit key) header.d=yandex-team.ru header.i=@yandex-team.ru header.b=fH4ppwqn; arc=none smtp.client-ip=178.154.239.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yandex-team.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yandex-team.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yandex-team.ru header.i=@yandex-team.ru header.b="fH4ppwqn" Received: from mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net [IPv6:2a02:6b8:c10:49f:0:640:b99a:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 3CC2180830; Thu, 30 Oct 2025 10:43:49 +0300 (MSK) Received: from i111667286.ld.yandex.ru (unknown [2a02:6bf:8080:56d::1:12]) by mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id hhZcSK0Ft4Y0-qTvyUiRu; Thu, 30 Oct 2025 10:43:48 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1761810228; bh=EP6EuytiS7tC0fn/EYZWxe2O/pwA7Pr5SZWQ3bpebgc=; h=Message-ID:Date:Cc:Subject:To:From; b=fH4ppwqn+sm8nIGFWXHE0wAMxA4jlaWZCPAj5E9S0QctZ9YeXzQvErt5Q/UDqiFwc 3rXBRGHXS1TpNv7UeXUSHvxATE+ZcvuHwxtJxslJ/GV0v2dShnsRw5+WNsQQTu8jJp +yPmK+YynL2bXcgcheFkAv8sndn2Jc/R7APNXYgQ= Authentication-Results: mail-nwsmtp-smtp-corp-canary-81.sas.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Andrey Troshin To: stable@vger.kernel.org, Greg Kroah-Hartman Cc: Andrey Troshin , Steve French , linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org Subject: [PATCH 5.10] smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path Date: Thu, 30 Oct 2025 10:43:42 +0300 Message-ID: <20251030074342.1360-1-drtrosh@yandex-team.ru> X-Mailer: git-send-email 2.51.0.windows.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Stefan Metzmacher [ Upstream commit daac51c7032036a0ca5f1aa419ad1b0471d1c6e0 ] During tests of another unrelated patch I was able to trigger this error: Objects remaining on __kmem_cache_shutdown() Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection") Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Signed-off-by: Sasha Levin [Andrey Troshin: backport fix from fs/cifs/smbdirect.c to fs/smb/client/smb= direct.c] Signed-off-by: Andrey Troshin --- Backport fix for CVE-2025-39929 Link: https://nvd.nist.gov/vuln/detail/CVE-2025-39929 --- fs/cifs/smbdirect.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c index ae332f3771f6..e273f3b9efcb 100644 --- a/fs/cifs/smbdirect.c +++ b/fs/cifs/smbdirect.c @@ -1083,8 +1083,10 @@ static int smbd_negotiate(struct smbd_connection *in= fo) log_rdma_event(INFO, "smbd_post_recv rc=3D%d iov.addr=3D%llx iov.length= =3D%x iov.lkey=3D%x\n", rc, response->sge.addr, response->sge.length, response->sge.lkey); - if (rc) + if (rc) { + put_receive_buffer(info, response); return rc; + } =20 init_completion(&info->negotiate_completion); info->negotiate_done =3D false; --=20 2.34.1