From: CachyOS-kernels overlay
Subject: [PATCH] 6.18.48-r2: restore hardened protected_fifos/regular=2 after genpatch 1510

Gentoo 1510 keeps global link restrictions at 1 and makes fifos/regular
non-static. Hardened must finish at 2 without excluding 1510.

--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1097,8 +1097,8 @@
 
 static int sysctl_protected_symlinks __read_mostly = 1;
 static int sysctl_protected_hardlinks __read_mostly = 1;
-int sysctl_protected_fifos __read_mostly = 1;
-int sysctl_protected_regular __read_mostly = 1;
+int sysctl_protected_fifos __read_mostly = 2;
+int sysctl_protected_regular __read_mostly = 2;
 
 #ifdef CONFIG_SYSCTL
 static const struct ctl_table namei_sysctls[] = {