From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) (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 991171E98EF for ; Sat, 2 May 2026 19:10:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777749042; cv=none; b=egD6AIV8NykSfiA0aDu1O0rOq3RtuAAJQKU9wS1uNXmDlZWXCkOYqcEWoWNndB5msHQ6fqzXCN+HQrdPry0HLeU1e2acgn3nCfMFs3ZmFotgzPYr3T5kFuOa3mKAYeYaCCdHe28/6DAuGOpwBaCyamP3XTi4+BKtH9ncpIVDBug= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777749042; c=relaxed/simple; bh=2k+pROnaqtRg4paYHsezDta8apckjCrGkTD89Y61EP4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Hofq/QcD9gAcAQgvo3czXygCjKlk/KTXZq3lMx3vzy9uNxr0yBNFyz+CG+HbSFsIkLnqWrN93J311gcZPREUPbYtnEyI5R6WdIJKqIO/oDqjGEFjGgTIzds+XfQDG5RP5WtM8wLxV0WANy9bU7C/2Y/p12iODUqIX3dPt0aNpL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=XNQwjJQf; arc=none smtp.client-ip=91.218.175.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="XNQwjJQf" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1777749038; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=vbXt7SKz9jJRZsbFgn2tMqqzCv3vnBSFSOmfSt36JN4=; b=XNQwjJQfdexg5jMrg/ET/4Yoxo6epQ/tyEbIfsh/+WtJ4ROU2M03Q4BcZ21jloEx9MU8N+ 8aq2QGlsWCJXc2o8g8ghUGy/By5M8boJcNXzHRO9Bghrjg57aehBSLZf7hBwJgO3+Fdcc7 sj1WQHfTGX3uRpO4FGU8ZwaWZhKn+bA= From: Thorsten Blum To: Lukas Wunner , Ignat Korchagin , Herbert Xu , "David S. Miller" , Vitaly Chikunov Cc: Thorsten Blum , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] crypto: ecrdsa - fix unknown OID check in ecrdsa_param_curve Date: Sat, 2 May 2026 21:09:04 +0200 Message-ID: <20260502190903.252061-3-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=918; i=thorsten.blum@linux.dev; h=from:subject; bh=2k+pROnaqtRg4paYHsezDta8apckjCrGkTD89Y61EP4=; b=owGbwMvMwCUWt7pQ4caZUj3G02pJDJnfvM8/dUpJO+/5zPHGqxMT9zm6/DmnvLl0xpzHB1TU2 G2PPP2a31HKwiDGxSArpsjyYNaPGb6lNZWbTCJ2wsxhZQIZwsDFKQATydnK8Jv90huF2IbDK4T3 yGksC0/RklaecEnl/7FJTxf+qbc7Xn+QkeHBLdEdRu7fmNs59ilpfOS2PzttfdTPmXtcJp5eEFO m+oMZAA== X-Developer-Key: i=thorsten.blum@linux.dev; a=openpgp; fpr=1D60735E8AEF3BE473B69D84733678FD8DFEEAD4 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT The ->curve_oid check in ecrdsa_param_curve() rejects the valid enum value 0 (OID_id_dsa_with_sha1), but look_up_OID() returns OID__NR on lookup failure. Compare ->curve_oid with OID__NR instead to ensure that only unknown OIDs return -EINVAL. Fixes: 0d7a78643f69 ("crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm") Signed-off-by: Thorsten Blum --- crypto/ecrdsa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/ecrdsa.c b/crypto/ecrdsa.c index 2c0602f0cd40..0cd7eb367604 100644 --- a/crypto/ecrdsa.c +++ b/crypto/ecrdsa.c @@ -145,7 +145,7 @@ int ecrdsa_param_curve(void *context, size_t hdrlen, unsigned char tag, struct ecrdsa_ctx *ctx = context; ctx->curve_oid = look_up_OID(value, vlen); - if (!ctx->curve_oid) + if (ctx->curve_oid == OID__NR) return -EINVAL; ctx->curve = get_curve_by_oid(ctx->curve_oid); return 0;