--- /dev/null
+From e9e40400003db2e4f12dba85acabbaf2212a520f Mon Sep 17 00:00:00 2001
+From: Scott Shambarger <devel@shambarger.net>
+Date: Sat, 7 Dec 2024 16:37:28 +0000
+Subject: [PATCH] linux: Allow the __NR_rt_sigprocmask syscall
+
+Fixes recent glibc changes to getrandom() used by arc4random().
+Fixes #421.
+
+Upstream-Status: Backport
+See details in https://github.com/NetworkConfiguration/dhcpcd/issues/421
+
+Signed-off-by: Scott Shambarger <devel@shambarger.net>
+---
+ src/privsep-linux.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/privsep-linux.c b/src/privsep-linux.c
+index 8357904c9c9a..e3485a2efdfc 100644
+--- a/src/privsep-linux.c
++++ b/src/privsep-linux.c
+@@ -409,6 +409,9 @@ static struct sock_filter ps_seccomp_filter[] = {
+ #ifdef __NR_recvmsg
+ SECCOMP_ALLOW(__NR_recvmsg),
+ #endif
++#ifdef __NR_rt_sigprocmask
++ SECCOMP_ALLOW(__NR_rt_sigprocmask),
++#endif
+ #ifdef __NR_rt_sigreturn
+ SECCOMP_ALLOW(__NR_rt_sigreturn),
+ #endif