From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A2F543F23C5; Wed, 20 May 2026 18:18:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779301110; cv=none; b=MQsjf1/BWIQ82pw9Yn9uZopMtD4CUxOHhwsBlIK7KqbmDPH5w0g1vJeOKNM4slcBVPL36wxf7JlF2JN/LEqPqepvr82cLf9Ik/mgaiDye5d9qj2Zh0bRAMFpqYEbiYpTzgUtzc2rz1RDxFYbOFtrn10GtkjPYvSVMVyFHNcSUZ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779301110; c=relaxed/simple; bh=P6A++E6kgAlDAE7CjHiW1/blm0PFS6c+5vJm9qI+TZg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tWjSINuOkNVNFTNe176ufAWyVQcRD6SJ/l8fWPFY4N39xq5zw/bsZAQgC7UF292QpQtz6SsbrcrV0pDMypvLBIWRAzUqd+CZXIfBbrBjCsQScYNhYW0mNTCVHsqFbXsyoFp+OmoseuiOP1S0z7wHlfphmiuS3HBcxESX4S72yJI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=C+U3xheS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="C+U3xheS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 137B21F000E9; Wed, 20 May 2026 18:18:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779301109; bh=czGnA3hjFZpNFe0fhYFLmDYfgVt72mlyWU4JnE5HLWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=C+U3xheSZxgzzRXWe5zlsnHxxfpZG2E5/YLBbMTG6mY/AhMv2WuXT70BWYR5SmJvH 9WrDhw8HmC+JAQ6FRp5F88PpUjhUOweZFHaG4qvfP3CQ3NGHXslihu62QMTRr4IvWg 8FWXWVjc4HtmS5LiaprSeapr/1+oAce9//YABwb8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paul Moses , Tom Lendacky , Herbert Xu , Sasha Levin Subject: [PATCH 6.12 428/666] crypto: ccp - copy IV using skcipher ivsize Date: Wed, 20 May 2026 18:20:39 +0200 Message-ID: <20260520162120.548282779@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162111.222830634@linuxfoundation.org> References: <20260520162111.222830634@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Moses [ Upstream commit a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 ] AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver. ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer. Use crypto_skcipher_ivsize() to copy only the algorithm's IV length. Fixes: 2b789435d7f3 ("crypto: ccp - CCP AES crypto API support") Signed-off-by: Paul Moses Reviewed-by: Tom Lendacky Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/ccp/ccp-crypto-aes.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/ccp/ccp-crypto-aes.c b/drivers/crypto/ccp/ccp-crypto-aes.c index d11daaf47f068..871886826cf00 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes.c +++ b/drivers/crypto/ccp/ccp-crypto-aes.c @@ -29,8 +29,11 @@ static int ccp_aes_complete(struct crypto_async_request *async_req, int ret) if (ret) return ret; - if (ctx->u.aes.mode != CCP_AES_MODE_ECB) - memcpy(req->iv, rctx->iv, AES_BLOCK_SIZE); + if (ctx->u.aes.mode != CCP_AES_MODE_ECB) { + size_t ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req)); + + memcpy(req->iv, rctx->iv, ivsize); + } return 0; } -- 2.53.0