From 1b5a6198f5a9d0aa5497da0dc4bcd4fc166ee516 Mon Sep 17 00:00:00 2001
From: John Johansen <john.johansen@canonical.com>
Date: Fri, 6 May 2022 18:57:12 -0700
Subject: [PATCH] apparmor: Fix abi check to include v8 abi
Git-commit: 1b5a6198f5a9d0aa5497da0dc4bcd4fc166ee516
Patch-mainline: v6.2-rc1
References: git-fixes

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 <john.johansen@canonical.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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 3ea591d31be7..0203e43460b6 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -1183,7 +1183,7 @@ 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;
-- 
2.35.3