diff --git a/meta/recipes-kernel/linux/cve-exclusion.inc b/meta/recipes-kernel/linux/cve-exclusion.inc
index 506d3705..4ac5e343 100644
--- a/meta/recipes-kernel/linux/cve-exclusion.inc
+++ b/meta/recipes-kernel/linux/cve-exclusion.inc
@@ -252,3 +252,10 @@ CVE_STATUS[CVE-2023-4010] = "fixed-version: Fixed from version 6.18"
 # https://lore.kernel.org/linux-nvme/20231016060519.231880-1-joshi.k@samsung.com/
 CVE_STATUS[CVE-2023-6238] = "unpatched: the proposed fix was applied to \
 nvme-6.6 and then reverted, no upstream fix has landed since"
+
+# "Marvin": the PKCS#1 v1.5 unpadding in crypto/rsa-pkcs1pad.c branches on
+# secret-derived data, leaking padding validity by timing. Not a Marvell or
+# s390 issue despite some data sets. Fixed only in RHEL downstream.
+# https://people.redhat.com/~hkario/marvin/
+CVE_STATUS[CVE-2023-6240] = "unpatched: Bleichenbacher-style timing oracle in \
+crypto/rsa-pkcs1pad.c is still present in mainline, fixed only downstream in RHEL"