diff --git a/doc/SEC.md b/doc/SEC.md
index 8148ce8..f9b39be 100644
--- a/doc/SEC.md
+++ b/doc/SEC.md
@@ -149,4 +149,14 @@ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25020
 
 * Too numerous to list for now...
 
+## Other Known Holes
+The `3.10` kernel series was declared a LTS kernel by Greg KH in 2013.
+This blog post linked below from 2017 reflects back on it's history. 
+In that post it says there were `3,456` known unfixed bugs in the
+`3.10.49` kernel in 2017. The number has likely increased.
+
+https://wtarreau.blogspot.com/2017/11/look-back-to-end-of-life-lts-kernel-310.html
+
+The last release in the stable 3.10 series was `3.10.108`, which was
+released November 4th, 2017.