diff --git a/meta/recipes-kernel/linux/cve-exclusion.inc b/meta/recipes-kernel/linux/cve-exclusion.inc
index ba8e467..be74672 100644
--- a/meta/recipes-kernel/linux/cve-exclusion.inc
+++ b/meta/recipes-kernel/linux/cve-exclusion.inc
@@ -214,3 +214,10 @@ KSM page deduplication, only reachable when KSM is enabled and opted into"
 # https://ubuntu.com/security/CVE-2021-3864
 CVE_STATUS[CVE-2021-3864] = "unpatched: no accepted mainline fix, \
 exploitation requires a relative kernel.core_pattern"
+
+# Never substantiated: no affected version, reproducer or commit was ever
+# identified. Closed NOTABUG by Red Hat, INVALID by SUSE (bsc#1195329) and
+# "non issue, no security impact" by Debian.
+# https://bugzilla.redhat.com/show_bug.cgi?id=2044575
+CVE_STATUS[CVE-2022-0400] = "disputed: the reported net/smc out-of-bounds read \
+was never substantiated and was closed as not-a-bug by Red Hat, SUSE and Debian"