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=1794063049; b=1TV0EjPmmkO648R6Xm6Y16vTwm1Y+4jVwZqRg34oVj56rPaPOrKwSsoaWhVydacEWBoF GMNqs+FqLa0YsN7oYC+DTLnGU/iFDhWnT+koAhBIEI+gFNIPV+yRKnzx7HsoCjF17C1uz /VpjxUVpTLsKn9Ipcda3PvL48gPEuEmGUNXwtdT5/PcI/1yyEIAlSDIe09HmtXcqBjc99 kmrQry0HOM37ABKHrDAOCoPxotgsI1B4lFSVerpsPoFzWIUmfbDxywI8xge6TF50xxtmh fQSVKlcGZMBE6QzEPd4CGfhXx9gssTyAVnC5LKm0d1sE9ZeUs5w4NDTqEqRauI/4WgA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063049; 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=+nDOL11drOn8MqNE9xvTk2Ww4hGnikW6YPyQk8eqUb8=; b=jkhUfYF3JJGmbbloRN8OB4m566ByqrAs1ekfBsbkoha1FwNZPjZW/vb3uKrBz5ROlquI X4ta3z8BmLgpq9UTw94xcezqZkJE2wYKK0a0eKbaK4m3czhlpc/Y+DTLeR8WOJT8GovJQ yQldrA4mV5GacHSuGzf4WfkIzso6qa4rSNnwLcAUwGmQe2dRcYsFDQQSEcZlyDGbd4Csr qimz3qyamKznumLkwWF2X+JU0dhgWVvFGwnIwTzcrDVKEG1Unx+gNmWxWG1hY6TRIoj/h 2mcKOD6dEm+q2vruaneSZmJtk9vrQXhQssLsKLKOTwjFca23TP57WpVAMZh0p1bXSJw== 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=lXDWa7kv; 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 4A138606D801; Sat, 7 Nov 2026 14:50:49 +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=lXDWa7kv Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA9D81F0089F; Sat, 7 Nov 2026 14:50:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063049; bh=+nDOL11drOn8MqNE9xvTk2Ww4hGnikW6YPyQk8eqUb8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lXDWa7kvwmAsRJhj88LMdfHB9AQFLBMlhQtfUTtSGSuhHfF8JDJgYVXLP9QHr8+80 OHx1ibsKZSK4lW0WgR66mF3dgJQhJszVk1+UfNyr9yfTugVwPA+Wo9y9uzwF8+AW54 ipkwor0nXTCJvggftQ18bSvA0kXX6F+F91OxX71Y= 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 6.18 294/869] pseries/plpks: validate input to plpks_signed_update_var() Date: Sat, 7 Nov 2026 08:49:36 -0500 Message-ID: <20261107134902.003472954@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 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 1ea3ef0a36254..3686d66277262 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -434,6 +434,9 @@ 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