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 139658634A; Mon, 6 Jan 2025 15:22:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736176925; cv=none; b=uST9rMJ2QIOot/FQFyDkiPUd+szIBj1Yg8u2hCtHZlra9dOv4LU7pBUUtKQSuFagJlxidOONDuwxi1Y/akhnNZtFTXS9g/Gd3o8rwYKWCMdNZWQtDzgueDQv+sWbZypvFIqkYCEfCOIHM2kPja7F8pEH/gYgDLtYRA7M5+iPB+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736176925; c=relaxed/simple; bh=aacWUfjPryDN3Rz8bN31K/ytHlU4s8qWt2o44wXbumM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nCdFXe9SNEUrAMseiF+dKU6lS/71y1eDRO9MGYx3jhAzil2a+8sgQ20FWTYF3rk+DgqypU2TiHED7i1hOopAm0hzpWamOitMti5iVGKUd/nEqA56wNXHXZvgDKRbXoLGmXHJ3tJGxjnUltX3ikMdu8d7TkTKLn3yFPeB4KgmEI4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qoxje5kA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qoxje5kA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DEDFC4CED2; Mon, 6 Jan 2025 15:22:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1736176924; bh=aacWUfjPryDN3Rz8bN31K/ytHlU4s8qWt2o44wXbumM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qoxje5kAFkREc6T0ROAQ+CdRZ5qCMhvs/83ZugFhPqFzj0sTfGKbRsEkSvt44OuVD 6VTlJ+xiGn+c3Ma141XSU2NHFQxFViw6sTngx7brSdiBb0GsP2xFNBmxPDaYynety5 +WndFwFsWwhOn6nAMo/FVdmZaiURJKInq3GrxjMU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nikolay Kuratov , Xin Long , Jakub Kicinski Subject: [PATCH 6.1 74/81] net/sctp: Prevent autoclose integer overflow in sctp_association_init() Date: Mon, 6 Jan 2025 16:16:46 +0100 Message-ID: <20250106151132.222306844@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250106151129.433047073@linuxfoundation.org> References: <20250106151129.433047073@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nikolay Kuratov commit 4e86729d1ff329815a6e8a920cb554a1d4cb5b8d upstream. While by default max_autoclose equals to INT_MAX / HZ, one may set net.sctp.max_autoclose to UINT_MAX. There is code in sctp_association_init() that can consequently trigger overflow. Cc: stable@vger.kernel.org Fixes: 9f70f46bd4c7 ("sctp: properly latch and use autoclose value from sock to association") Signed-off-by: Nikolay Kuratov Acked-by: Xin Long Link: https://patch.msgid.link/20241219162114.2863827-1-kniv@yandex-team.ru Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/sctp/associola.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -137,7 +137,8 @@ static struct sctp_association *sctp_ass = 5 * asoc->rto_max; asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay; - asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] = sp->autoclose * HZ; + asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] = + (unsigned long)sp->autoclose * HZ; /* Initializes the timers */ for (i = SCTP_EVENT_TIMEOUT_NONE; i < SCTP_NUM_TIMEOUT_TYPES; ++i)