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 8F8F1145A1C for ; Tue, 21 May 2024 15:37:13 +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=1716305833; cv=none; b=PISUKWN74bVvOgvj0ldn7QX5TZc86clYErlDCPvNVrz9uTf6g0b3mdxxBrC9nj0BNr1F1zMIlt/A1ZwILJNqJS/apJouclcYskfnW4Jar1J0Otj7jxJVTQ/RH3d+78BwHbOurdLdFZnMqML+KkQhwBpTNwHvGC+2QLVtNxpzds4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716305833; c=relaxed/simple; bh=zzQxK4TenIXrjR9U63jGDH7chMpwETOtTfFFHB0w2SM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qlvESn5jQZMyi55i85H2kidZiMkFfv1SRaOXHul9WC1xnyc1LJNGtL84+trhLXR8wjjUs97IDPQIx/G1DQKd6jMdnh2ZQnrIapKjAHU6InPiIbMkk8OIGcn5tpi4YFQovfJDnAA3Z2094ISod5bRP5+jdEgpZnLS5oQUcec/aAE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=uwD79uZh; 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="uwD79uZh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17807C2BD11; Tue, 21 May 2024 15:37:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1716305833; bh=zzQxK4TenIXrjR9U63jGDH7chMpwETOtTfFFHB0w2SM=; h=From:To:Cc:Subject:Date:Reply-to:From; b=uwD79uZhv3JDYiU6rb9zTF7dkS5fmIUntyd9yQOE5CjB25mGby9X+MgRhHUGltDTw fw71cU39yw/Oi+fpHJZQiuSBFz5O2mf9JcUIwJs7TfYEWBtsIXpVQmwbZP5J3tsmwm PEr836F8S78AIX/lAYjpGUTiBCimi9yBK3hBQpcw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2023-52823: kernel: kexec: copy user-array safely Date: Tue, 21 May 2024 17:31:59 +0200 Message-ID: <2024052106-CVE-2023-52823-3d81@gregkh> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2041; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=zzQxK4TenIXrjR9U63jGDH7chMpwETOtTfFFHB0w2SM=; b=owGbwMvMwCRo6H6F97bub03G02pJDGk++6wOivAbiG8zPOv1MF3BX3aBn0ZaDXONU/BLlT1+v gKTri7tiGVhEGRikBVTZPmyjefo/opDil6Gtqdh5rAygQxh4OIUgIn8FGJYsPRo2ov8pY+jih8f Uw72OXIkWMhQiGF++NaGVVH3FZ9N+VDK82LNveo+1o8nAA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: kernel: kexec: copy user-array safely Currently, there is no overflow-check with memdup_user(). Use the new function memdup_array_user() instead of memdup_user() for duplicating the user-space array safely. The Linux kernel CVE team has assigned CVE-2023-52823 to this issue. Affected and fixed versions =========================== Fixed in 5.15.140 with commit d4f2c09d4672 Fixed in 6.1.64 with commit 8332523b13db Fixed in 6.5.13 with commit b0ed017a2b97 Fixed in 6.6.3 with commit 4fc857cc5cb9 Fixed in 6.7 with commit 569c8d82f95e 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-2023-52823 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: kernel/kexec.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/d4f2c09d4672f0e997ba4b1b589cc376be7ec938 https://git.kernel.org/stable/c/8332523b13dbfcce60f631dfb34ac90df021b4bd https://git.kernel.org/stable/c/b0ed017a2b9735753eb95798d9f60176480424ca https://git.kernel.org/stable/c/4fc857cc5cb9b7ce6940898857d773564973a584 https://git.kernel.org/stable/c/569c8d82f95eb5993c84fb61a649a9c4ddd208b3