From nobody Sat Feb 7 21:52:51 2026 Received: from out-178.mta0.migadu.com (out-178.mta0.migadu.com [91.218.175.178]) (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 B4BB23233EE for ; Thu, 23 Oct 2025 17:52:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761241977; cv=none; b=hYcQBHJbRFMLWWCECmNwFR/7+Bz6o/BZXCs30d2P1zlWj4mErrcRFGH7jARVRVUcTqVo9of5y00PnfyHoohQRwU2kKlzLVcHfX4cpcVsMkgVnopZkvG/bqT9Agq3gyeWmuzZBoMhLagqmxwVLxw81dQ4hRsiGOJPSZgASqBwSdQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761241977; c=relaxed/simple; bh=3/Hb62kc+NYq2C0hsOSogiX9/a2NhcysJRz/S17ajqo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=tRnlrq5J6NkjTdPMnpn/zUa527JOll3EksVd8XLxY1H5Mgh7NEovNOaW7Q+nAPTLj7AmOve1qGiQawjW9vutsFafco9YmONt3/1QDNbdxn0xlZlujSGaeiySgKTmi0vaOvxEVTcJlMs/+dS5Upr/wogKd95hCdYr6shX5ztgWvA= 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=J6jXXkXM; arc=none smtp.client-ip=91.218.175.178 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="J6jXXkXM" 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=1761241963; 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=vENFCP7b3Pf6ElRkmq5+rmKi7BK0xmEqT+h7PKf7AdY=; b=J6jXXkXMi8Ubq7RroFsuYEnRLp8rKwwL6hlNp0XDYItLFMdhPWHPb5Hn5PwIZhfMh/cdwb NOPmbD/jd23Pk3v5Sbd7GPkIrW2MeVDMzak4b00jtpZ5ktFeMlxdVKsflh3kZBuFsiDCsw /fsTnKEcza+D9bagRrMkNpLuzQUXQrI= From: Thorsten Blum To: David Howells , Lukas Wunner , Ignat Korchagin , Jarkko Sakkinen , Kees Cook , "Gustavo A. R. Silva" Cc: Thorsten Blum , keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH] keys: Annotate struct asymmetric_key_id with __counted_by Date: Thu, 23 Oct 2025 19:48:11 +0200 Message-ID: <20251023174810.75805-2-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Add the __counted_by() compiler attribute to the flexible array member 'data' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by: Thorsten Blum Reviewed-by: Jarkko Sakkinen Reviewed-by: Lukas Wunner --- include/keys/asymmetric-type.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/keys/asymmetric-type.h b/include/keys/asymmetric-type.h index 69a13e1e5b2e..1b91c8f98688 100644 --- a/include/keys/asymmetric-type.h +++ b/include/keys/asymmetric-type.h @@ -49,7 +49,7 @@ enum asymmetric_payload_bits { */ struct asymmetric_key_id { unsigned short len; - unsigned char data[]; + unsigned char data[] __counted_by(len); }; =20 struct asymmetric_key_ids { --=20 2.51.0