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=1794064303; b=sL6nZoUDTZwbFFPmAh5RuIqLQxZR7Wlclso1Ay+buhu+o4aLuKYrLmqFk1SP4csSsQdI rg/GKVyDgjAOqGTE6MKxR3UrbzpyJhbQiHAvUibcFIipiij7NRsiZYfiIdpbUMT5Ogwm1 qaq/tBCtrxITw4A41EcBWlelWoe4K8+y2YEb2L7QOoUx4VKLgHauF0sg3fAQBZvdcuKAP dLCcnqGf8slYyaRLXmiwBKRN6fSSoG7b9AT9uoXOgZm0CSqsxXYa/u1gNCA0LmZeFUZW+ sD50UN9ugq/q12akxcQERvB5tyExS7UjaKDwJZvf/oOiJAtmqhLQ0smSg95z9FIA/qA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064303; 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=JVqJ4+Nt/2zruGkdMVaWHy4kJ9lHGKlktJ7U0Dpg0uE=; b=MaPOkTVGEwMPT6hlZFPNRiVm0W2DObQ3WtMmvTilVFiL2m8k9EHtltxJAMTb7l146MY9 Ud/oOMomKGB/NkYSOTsoCcSlRK9gZKtw19NyAIsCi99fzTv0B2S6wPCIm3FXsz7sL3Uoe dc4uygnMJZQ7EgGDRHyO0uhE/9Qo32PP38qOEOHMpKnqBHpVZqHHGOhCoZXBTYw/Jb8uc aUvjY/50s8y5pvvY5LN2VjTGAM4YiQqrIuyLghvwDxHBfAwb5pkHOAvnaUu7r/K7TJEdL ELtoAXdFiJHJTr50EMhny2pZtT60KtxCfwQzKJatw4fiJ5paY5scyySwdNkrkijKZmA== 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=eCTAYClc; 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 6B2CC606A9CC; Sat, 7 Nov 2026 15:11:43 +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=eCTAYClc Received: by smtp.kernel.org (Postfix) with ESMTPSA id 178EA1F0089F; Sat, 7 Nov 2026 15:11:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064303; bh=JVqJ4+Nt/2zruGkdMVaWHy4kJ9lHGKlktJ7U0Dpg0uE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=eCTAYClcLv0noAwzsuLGPqgr82hFBkBZWHQgbYKix72/aI7DBR/ZJkt9xv0jz1XOc RMBjVPGaHu2oWHpfae51jURKW15h0izw4krVW20pkpXol0LnW9VriYELuQqBXOA7Qf d5LaXu0MJ2aPasuVp5bWl5NCN8QuAw/1WVOjiwEc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Srish Srinivasan , R Nageswara Sastry , Madhavan Srinivasan , Sasha Levin Subject: [PATCH 7.3 0378/1257] pseries/plpks: validate input to plpks_signed_update_var() Date: Sat, 7 Nov 2026 08:44:34 -0500 Message-ID: <20261107134949.990024870@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@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 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Srish Srinivasan [ Upstream commit b59ff2d50b817eeec1259f357aae821c7834007f ] plpks_signed_update_var() dereferences the supplied PLPKS variable pointer without validating it. A NULL argument could therefore result in a NULL pointer dereference. Reject a NULL pointer argument with -EINVAL. Fixes: 899d9b8fee66 ("powerpc/pseries: Implement signed update for PLPKS objects") Cc: stable@vger.kernel.org # 6.3 Signed-off-by: Srish Srinivasan Tested-by: R Nageswara Sastry Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260923182816.151451-4-ssrish@linux.ibm.com Signed-off-by: Sasha Levin --- arch/powerpc/platforms/pseries/plpks.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c index ccf5765a907bf..e3ae2cd78247a 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -637,6 +637,9 @@ int plpks_signed_update_var(struct plpks_var *var, u64 flags) u64 continuetoken = 0; u64 timeout = 0; + if (!var) + return -EINVAL; + if (!var->data || var->datalen <= 0 || var->namelen > PLPKS_MAX_NAME_SIZE) return -EINVAL; -- 2.53.0