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 E9FE41684BE; Fri, 13 Feb 2026 13:56:45 +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=1770991006; cv=none; b=RnmI1EbsQjaHHaja5FQzuUD1DOZAv79PoWSsjpBlsqRHZFxf9084w0HTIGwxmgNCEy24Z962d4WCxkr4lGxaz3vs4aktpbxOVWUhKGicE62jWoHnTVqBFrDSHzVYo/MU6QqbCb8LVd0kL+BS7EJodoTrxFEgjvfCBgZx4N8p9bY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770991006; c=relaxed/simple; bh=aCHXzFkKGtAKREpaD52J+CxClVzibTfLQppArDE+gY4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E80h2hCkgMFYP7t/09toc2LaUlzerUCkBV1d3vvAnZaeiRXzJwl+1nx+m+zkj5CUWmrFsZm4xH/lk8LH1Av6fLoKI4R7c5WnjXdWqrI0Z4GE5CICQ1rv2YxVoNC39zh5vTmZg0rnEPTnvfBZ4K/VzYNtS81ncvh65Nqw8jS4Fig= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nMdPizw+; 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="nMdPizw+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E9DAC116C6; Fri, 13 Feb 2026 13:56:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770991005; bh=aCHXzFkKGtAKREpaD52J+CxClVzibTfLQppArDE+gY4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nMdPizw+wRcrjjWkzyxewO2r7/2EH4ueeyttFkGwZkbgLDwBiAo085zKWxz7Sy/Kb 0U6hNIIMx7+qIynvopDh4yGDpNyY36VVvsbxPKlasc565aGmM3qKxNc+1BX/k6u8rU afwAY47Ter4ClbNqC8o1qBlldd5/pdv20qqtW3V8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thorsten Blum , Herbert Xu Subject: [PATCH 6.6 06/25] crypto: octeontx - Fix length check to avoid truncation in ucode_load_store Date: Fri, 13 Feb 2026 14:48:32 +0100 Message-ID: <20260213134704.119599980@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260213134703.882698935@linuxfoundation.org> References: <20260213134703.882698935@linuxfoundation.org> User-Agent: quilt/0.69 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thorsten Blum commit 5565a72b24fa7935a9f30af386e92c8c9dfb23b9 upstream. OTX_CPT_UCODE_NAME_LENGTH limits the microcode name to 64 bytes. If a user writes a string of exactly 64 characters, the original code used 'strlen(buf) > 64' to check the length, but then strscpy() copies only 63 characters before adding a NUL terminator, silently truncating the copied string. Fix this off-by-one error by using 'count' directly for the length check to ensure long names are rejected early and copied without truncation. Cc: stable@vger.kernel.org Fixes: d9110b0b01ff ("crypto: marvell - add support for OCTEON TX CPT engine") Signed-off-by: Thorsten Blum Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/marvell/octeontx/otx_cptpf_ucode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/crypto/marvell/octeontx/otx_cptpf_ucode.c +++ b/drivers/crypto/marvell/octeontx/otx_cptpf_ucode.c @@ -1336,7 +1336,7 @@ static ssize_t ucode_load_store(struct d int del_grp_idx = -1; int ucode_idx = 0; - if (strlen(buf) > OTX_CPT_UCODE_NAME_LENGTH) + if (count >= OTX_CPT_UCODE_NAME_LENGTH) return -EINVAL; eng_grps = container_of(attr, struct otx_cpt_eng_grps, ucode_load_attr);