From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 F142F46B5 for ; Mon, 16 Jan 2023 16:19:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78021C433D2; Mon, 16 Jan 2023 16:19:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1673885942; bh=iLMIcUGoaR1oXnyAtOIdmloOVHjHTAhXBqkrlpMB/wI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UA9ZQYneaiSikC9BuybjsQJzGiy+tTfZ065/iM7Or1R4VIc/VLMFBmmE+BWOUWu3B wXoxJEBxiZTMzGLyIfe+l9B4X3fHibmrPEBZM3bXjOh+iO+sDTXkxodi0HACf/mcPa EX1kIOkTz6zFur5jCrxrUukAe/rDHJO54NT7MSFk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, John Johansen , Sasha Levin Subject: [PATCH 5.4 242/658] apparmor: Fix abi check to include v8 abi Date: Mon, 16 Jan 2023 16:45:30 +0100 Message-Id: <20230116154920.637544700@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230116154909.645460653@linuxfoundation.org> References: <20230116154909.645460653@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: John Johansen [ Upstream commit 1b5a6198f5a9d0aa5497da0dc4bcd4fc166ee516 ] The v8 abi is supported by the kernel but the userspace supported version check does not allow for it. This was missed when v8 was added due to a bug in the userspace compiler which was setting an older abi version for v8 encoding (which is forward compatible except on the network encoding). However it is possible to detect the network encoding by checking the policydb network support which the code does. The end result was that missing the abi flag worked until userspace was fixed and began correctly checking for the v8 abi version. Fixes: 56974a6fcfef ("apparmor: add base infastructure for socket mediation") Signed-off-by: John Johansen Signed-off-by: Sasha Levin --- security/apparmor/policy_unpack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index 8cfc9493eefc..7e32c09249b1 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -955,7 +955,7 @@ static int verify_header(struct aa_ext *e, int required, const char **ns) * if not specified use previous version * Mask off everything that is not kernel abi version */ - if (VERSION_LT(e->version, v5) || VERSION_GT(e->version, v7)) { + if (VERSION_LT(e->version, v5) || VERSION_GT(e->version, v8)) { audit_iface(NULL, NULL, NULL, "unsupported interface version", e, error); return error; -- 2.35.1