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 C9E7A322B63 for ; Wed, 24 Dec 2025 11:00:21 +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=1766574021; cv=none; b=WsranaeCDcy04Rl/d9eDtdmXrmICO0X+NmPQ05hGtVG011kQzV36hganw57Ciins55V2g5dLG5GLKag5Dq2IPhsLDffyi2WnscFFYTnG2FyQixNhHByVZQi9uWeyFTbMVcQNteAQXXqIiQDlkm1SDrzR3MEA5DDjdYn/noilgmI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766574021; c=relaxed/simple; bh=REQGvkZDMWkkLqkqAj4FZh5UXoldzP9t5Ss8FvheQpA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=eRMnX3WfQHTWwM9warGU60iHhhgN1Zpy2ucQjAfEak+PhOj7FlmJoKBb880Gw1AO8llPQTU3DooUcj8gA4cldaP0T3C70Pk13b5yRU02OLGi8tseQp1EjaUKl4XEAu5ZOgxqZ1HeR/kiVhXFZwhXJXKOBAs8g0gMg3q4X6RvX9c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Lyn7wNTH; 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="Lyn7wNTH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53391C4CEFB; Wed, 24 Dec 2025 11:00:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1766574021; bh=REQGvkZDMWkkLqkqAj4FZh5UXoldzP9t5Ss8FvheQpA=; h=From:To:Cc:Subject:Date:Reply-To:From; b=Lyn7wNTH5rHtFzmbMVPNoI4dDgWTnYiUSfyXEV282dF30fsOJV8xVHal+9xM8OTV5 m/fnpYYx+v9ceBZiLsjzUqVRZsFznS833LOCgVbIh25AkKYgSphKNgB2V4ql3+1N23 Celm0FRigGVN6slR4HQymXWRfgtvOzjIBlyqjdQI= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2023-54030: io_uring/net: don't overflow multishot recv Date: Wed, 24 Dec 2025 11:57:14 +0100 Message-ID: <2025122436-CVE-2023-54030-e7f3@gregkh> X-Mailer: git-send-email 2.52.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1871; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=Ylh9pqVJ8UvvDzjOPhTZAkoPEKKrag2FTs9AZ8umCtM=; b=owGbwMvMwCRo6H6F97bub03G02pJDJnex544T80U3Hq4WTRFKXlOQuHtX+c2ap+5pl7vzLwp2 fFS3ELHjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZhIdTzDgumzY3a7Hb54VmvL iqyr2931Z549WMkw3+vjnhNFgS7yr5ls5K7FybRIms9ZCwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: io_uring/net: don't overflow multishot recv Don't allow overflowing multishot recv CQEs, it might get out of hand, hurt performance, and in the worst case scenario OOM the task. The Linux kernel CVE team has assigned CVE-2023-54030 to this issue. Affected and fixed versions =========================== Issue introduced in 6.0 with commit b3fdea6ecb55c3ceea866ff66486927e51a982b3 and fixed in 6.5.3 with commit 1e2db9837be7d24a2a74eb3f3906d0872bee8907 Issue introduced in 6.0 with commit b3fdea6ecb55c3ceea866ff66486927e51a982b3 and fixed in 6.6 with commit b2e74db55dd93d6db22a813c9a775b5dbf87c560 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2023-54030 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: io_uring/net.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/1e2db9837be7d24a2a74eb3f3906d0872bee8907 https://git.kernel.org/stable/c/b2e74db55dd93d6db22a813c9a775b5dbf87c560