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 8FC133ACEFE; Mon, 17 Aug 2026 14:48:53 +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=1786978134; cv=none; b=i5eLAW1gsqgAgD/uyptm8ePzG+VN87TWtyJTJKYaLXU7O5YI5gDPJWrvQXezyAEk69RgCE95tYR/WsZRBrvNUb81CdT2Ru+pGYnt6lifJUV+Y5Hk5Q7e3MwQt4lNBrLqYHHnvqPL/FfPlh5m20M4AfSqvn82vLCllr7WCl2PNqs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786978134; c=relaxed/simple; bh=uN3EwmJXEO/lpCHRct2rC877T7NV90ghlh/XdLRQXOY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eqYSGJtK5+LOQ6RQhEnIGU1k7Jq49VEFC40HrIxPUCtDSE0Sf+GEw4vHJwi+WXBFxbFHmq8UbvIsIl+/Btz6GbPbdSsZvujRcmJSl8Z0zHmZhCR2suEhZxo71VCgnwwNwFLZIxXUB7i+tsodhuarRecud7xsaHNYcTX/qo1D91M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2OrdA6pL; 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="2OrdA6pL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E95601F000E9; Mon, 17 Aug 2026 14:48:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786978133; bh=JhYfE+RteH3z3IKMsHWiCStX6EkinTxMaqK4LwoIOg0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2OrdA6pLlqg0hRJBmt7RPVOUG3hNJrojXjrqFdqHTJ16oX4Lxx7OLy3kGrv0k5P77 2hQuXcRJCg54txBV2YHmZWM96rDA6JvWjCLzUAtfraSYgvcRbnoaesAcnrfd7GRP7D LWrNy10WuLwWtbFacmdvMU2xdq9yjraVorWqkMis= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Diego GonzalezVillalobos , Michael Roth , Herbert Xu , Jack Wang , Sasha Levin Subject: [PATCH 6.12 112/181] crypto: ccp - Fix checks for SNP_VLEK_LOAD input buffer length Date: Mon, 17 Aug 2026 15:33:26 +0200 Message-ID: <20260817132539.925724285@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132535.394764707@linuxfoundation.org> References: <20260817132535.394764707@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: Michael Roth commit ed53a5050f42a3243a7ed8dfa49030e54034b952 upstream. The SNP_VLEK_LOAD IOCTL currently fails due to sev_cmd_buffer_len() returning the default expected buffer length of 0 instead of the correct value, which would be sizeof(struct sev_user_data_snp_vlek_load). Add specific handling for SNP_VLEK_LOAD so the correct expected size is returned. Reported-by: Diego GonzalezVillalobos Cc: Diego GonzalezVillalobos Fixes: 332d2c1d713e ("crypto: ccp: Add the SNP_VLEK_LOAD command") Signed-off-by: Michael Roth Signed-off-by: Herbert Xu [Jack: sev_cmd_buffer_len() in queue/6.12 does not yet have the SEV_CMD_SNP_FEATURE_INFO case the upstream context line matched against (it lands in a later, unrelated commit not queued here), so the new SEV_CMD_SNP_VLEK_LOAD case was placed directly after SEV_CMD_SNP_COMMIT instead. No functional difference from upstream.] Signed-off-by: Jack Wang Signed-off-by: Sasha Levin --- drivers/crypto/ccp/sev-dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 7c05cae7e5778..6e08378eb5fac 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -226,6 +226,7 @@ static int sev_cmd_buffer_len(int cmd) case SEV_CMD_SNP_GUEST_REQUEST: return sizeof(struct sev_data_snp_guest_request); case SEV_CMD_SNP_CONFIG: return sizeof(struct sev_user_data_snp_config); case SEV_CMD_SNP_COMMIT: return sizeof(struct sev_data_snp_commit); + case SEV_CMD_SNP_VLEK_LOAD: return sizeof(struct sev_user_data_snp_vlek_load); default: return 0; } -- 2.53.0