From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063053; b=XeLAxfXfjK7scd0evuzTehnA4fSNj56on/1DVw90ys2Is30XDYdIfJD4T2redHdNk0rG 6tJ1bN11tPJAPkLVBk3hFFXlX/b36XaU1Db4p2dimuZ5ZE+JqZp3iOmWzVvuyfm5K3Cpq iDBB9YUMvROz+weHPNxQ4n2/1+liivwQ9kDWwuc6EKJ6b/+IFDQmhi1ge70PcAMfymxJZ K92wuaSf+hrTVRM3DUr6OKihugMFdmJq9nBpmlpXMTnp597PtNyn5yzz0yCTvbvZeMZhH piWOeXOP8+h243VG0ZHdeCypOV/3jS3cgXpw4OcMkxGv9q1Q4G6uEJN4CM2KG7nSALA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063053; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=lT6pFEFrU+Wqb9tVM4h7LndLsmYyZz8UnHJjS52WCP4=; b=hKfdrjtx7B+sracQcFwhRF3cNLGEun97SiXjizNyskU2MhKnAEl2h/StsIocvCSbxpp8 QLh7+eJaeTV02d5muhEZvOYOuVYrrvLs5HCfSQYgHDPb8fnYLcF7C+BfwR56BxNdCEOkr Q2ym17zS9o1yFwNK0XrnD4gmthAeiyTsXBUbEjC0n2qDVImctnvvf9V7hlUydvvPtEm2u cOhKGZUDlCQ57uYg5CeDP7Jfvi5z6shfO58GjeqYrSvS79MVnwp04tfTeAzVx9mFSf6C7 fAwe58ZLDqy1kYGVQf8sVU/FRPsi/AYOAdxaQdvHoogpxx3ttgokjw5hCg9xi7+rkSw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=gwZT3XLR; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D8A98606A331; Sat, 7 Nov 2026 14:50:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=gwZT3XLR Received: by smtp.kernel.org (Postfix) with ESMTPSA id 841461F0089F; Sat, 7 Nov 2026 14:50:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063052; bh=lT6pFEFrU+Wqb9tVM4h7LndLsmYyZz8UnHJjS52WCP4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=gwZT3XLRylJ1TbHI0Ixm/OzBVaCKGFyJhbJXO+z/XXKvnYD7HpOK4Yl+lKnLaijTT IWloOUrHnduyRlGmPSNYJQGcKrQTtzd+H71YHivn1dHbfP+nJFH/XwzfrZ+iBYeYFs Q43mGUY8sigUg2nSsWLOXHAMLrBCplfz6SAgPKTo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Srish Srinivasan , R Nageswara Sastry , Greg Joyce , Madhavan Srinivasan , Sasha Levin Subject: [PATCH 6.18 297/869] pseries/plpks: clear SED key data after use Date: Sat, 7 Nov 2026 08:49:39 -0500 Message-ID: <20261107134902.365437335@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Srish Srinivasan [ Upstream commit 217ba01e5b9096091acc2c1a3776cb3eb88c00ff ] Explicitly clear the temporary buffer containing SED key data after read and write operations. Fixes: ec8cf230cecc ("powerpc/pseries: PLPKS SED Opal keystore support") Cc: stable@vger.kernel.org # 6.7 Signed-off-by: Srish Srinivasan Tested-by: R Nageswara Sastry Reviewed-by: Greg Joyce Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260923182816.151451-8-ssrish@linux.ibm.com Signed-off-by: Sasha Levin --- arch/powerpc/platforms/pseries/plpks_sed_ops.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/pseries/plpks_sed_ops.c b/arch/powerpc/platforms/pseries/plpks_sed_ops.c index 7c873c9589eff..ac3ec2ca7fbee 100644 --- a/arch/powerpc/platforms/pseries/plpks_sed_ops.c +++ b/arch/powerpc/platforms/pseries/plpks_sed_ops.c @@ -84,14 +84,16 @@ int sed_read_key(char *keyname, char *key, u_int *keylen) ret = plpks_read_os_var(&var); if (ret != 0) - return ret; + goto out; len = min_t(u16, be32_to_cpu(data.key_len), var.datalen); memcpy(key, data.key, len); key[len] = '\0'; *keylen = len; - return 0; +out: + memzero_explicit(&data, sizeof(data)); + return ret; } /* @@ -102,6 +104,7 @@ int sed_write_key(char *keyname, char *key, u_int keylen) struct plpks_var var; struct plpks_sed_object_data data; struct plpks_var_name vname; + int ret; plpks_init_var(&var, keyname); @@ -127,5 +130,8 @@ int sed_write_key(char *keyname, char *key, u_int keylen) vname.name = var.name; plpks_remove_var(var.component, var.os, vname); - return plpks_write_var(var); + ret = plpks_write_var(var); + memzero_explicit(&data, sizeof(data)); + + return ret; } -- 2.53.0