diff --git a/meta/recipes-connectivity/dhcpcd/dhcpcd_10.0.6.bb b/meta/recipes-connectivity/dhcpcd/dhcpcd_10.0.6.bb
index bc87b91503..e6854e1c7f 100644
--- a/meta/recipes-connectivity/dhcpcd/dhcpcd_10.0.6.bb
+++ b/meta/recipes-connectivity/dhcpcd/dhcpcd_10.0.6.bb
@@ -17,6 +17,7 @@ SRC_URI = "git://github.com/NetworkConfiguration/dhcpcd;protocol=https;branch=ma
            file://0001-dhcpcd.8-Fix-conflict-error-when-enable-multilib.patch \
            file://CVE-2026-56113.patch \
            file://CVE-2026-56114.patch \
+           file://CVE-2026-56117.patch \
            "
 
 SRCREV = "1c8ae59836fa87b4c63c598087f0460ec20ed862"
diff --git a/meta/recipes-connectivity/dhcpcd/files/CVE-2026-56117.patch b/meta/recipes-connectivity/dhcpcd/files/CVE-2026-56117.patch
new file mode 100644
index 0000000000..4f79453aed
--- /dev/null
+++ b/meta/recipes-connectivity/dhcpcd/files/CVE-2026-56117.patch
@@ -0,0 +1,167 @@
+From 52e0746deeace02b0ea039441d6cdc58f026018d Mon Sep 17 00:00:00 2001
+From: Roy Marples <roy@marples.name>
+Date: Mon, 22 Jun 2026 23:41:53 +0100
+Subject: [PATCH] control: Avoid hangup in the recvdata path
+
+Instead return an error and bubble it up where it can be
+hangup / freed more cleanly.
+
+Reported-by: CuB3y0nd <root@cubeyond.net>
+
+(cherry picked from commit 78ea09ed1633a583dbcde6e7bab9df4639ec8a34)
+
+CVE: CVE-2026-56117
+Upstream-Status: Backport [https://github.com/NetworkConfiguration/dhcpcd/commit/78ea09ed1633a583dbcde6e7bab9df4639ec8a34]
+Signed-off-by: Theo Gaige (Schneider Electric) <tgaige.opensource@witekio.com>
+---
+ src/control.c         | 47 ++++++++++++++++++++++++-------------------
+ src/control.h         |  2 +-
+ src/privsep-control.c |  7 ++++++-
+ 3 files changed, 33 insertions(+), 23 deletions(-)
+
+diff --git a/src/control.c b/src/control.c
+index 17fd13aa..20480f69 100644
+--- a/src/control.c
++++ b/src/control.c
+@@ -115,10 +115,8 @@ control_handle_read(struct fd_list *fd)
+ 	bytes = read(fd->fd, buffer, sizeof(buffer) - 1);
+ 	if (bytes == -1)
+ 		logerr(__func__);
+-	if (bytes == -1 || bytes == 0) {
+-		control_hangup(fd);
+-		return -1;
+-	}
++	if (bytes == -1 || bytes == 0)
++		return (int)bytes;
+ 
+ #ifdef PRIVSEP
+ 	if (IN_PRIVSEP(fd->ctx)) {
+@@ -134,15 +132,13 @@ control_handle_read(struct fd_list *fd)
+ 		if (err == 1 &&
+ 		    ps_ctl_sendargs(fd, buffer, (size_t)bytes) == -1) {
+ 			logerr(__func__);
+-			control_free(fd);
+ 			return -1;
+ 		}
+-		return 0;
++		return 1;
+ 	}
+ #endif
+ 
+-	control_recvdata(fd, buffer, (size_t)bytes);
+-	return 0;
++	return control_recvdata(fd, buffer, (size_t)bytes);
+ }
+ 
+ static int
+@@ -205,23 +201,31 @@ static void
+ control_handle_data(void *arg, unsigned short events)
+ {
+ 	struct fd_list *fd = arg;
++	int err;
+ 
+ 	if (!(events & (ELE_READ | ELE_WRITE | ELE_HANGUP)))
+ 		logerrx("%s: unexpected event 0x%04x", __func__, events);
+ 
+ 	if (events & ELE_WRITE && !(events & ELE_HANGUP)) {
+-		if (control_handle_write(fd) == -1)
+-			return;
++		err = control_handle_write(fd);
++		if (err == -1)
++			goto hangup;
+ 	}
+ 	if (events & ELE_READ) {
+-		if (control_handle_read(fd) == -1)
+-			return;
++		err = control_handle_read(fd);
++		if (err == -1 || err == 0)
++			goto hangup;
+ 	}
+ 	if (events & ELE_HANGUP)
+-		control_hangup(fd);
++		goto hangup;
++
++	return;
++
++hangup:
++	control_hangup(fd);
+ }
+ 
+-void
++int
+ control_recvdata(struct fd_list *fd, char *data, size_t len)
+ {
+ 	char *p = data, *e;
+@@ -243,12 +247,13 @@ control_recvdata(struct fd_list *fd, char *data, size_t len)
+ 			if (e == NULL) {
+ 				errno = EINVAL;
+ 				logerrx("%s: no terminator", __func__);
+-				return;
++				return -1;
+ 			}
+-			if ((size_t)argc >= sizeof(argvp) / sizeof(argvp[0])) {
++			if ((size_t)argc + 1 >=
++			    sizeof(argvp) / sizeof(argvp[0])) {
+ 				errno = ENOBUFS;
+ 				logerrx("%s: no arg buffer", __func__);
+-				return;
++				return -1;
+ 			}
+ 			*ap++ = p;
+ 			argc++;
+@@ -268,12 +273,12 @@ control_recvdata(struct fd_list *fd, char *data, size_t len)
+ 		*ap = NULL;
+ 		if (dhcpcd_handleargs(fd->ctx, fd, argc, argvp) == -1) {
+ 			logerr(__func__);
+-			if (errno != EINTR && errno != EAGAIN) {
+-				control_free(fd);
+-				return;
+-			}
++			if (errno != EINTR && errno != EAGAIN)
++				return -1;
+ 		}
+ 	}
++
++	return 1;
+ }
+ 
+ struct fd_list *
+diff --git a/src/control.h b/src/control.h
+index f5e2bc7e..c5511dd7 100644
+--- a/src/control.h
++++ b/src/control.h
+@@ -75,5 +75,5 @@ struct fd_list *control_new(struct dhcpcd_ctx *, int, unsigned int);
+ void control_free(struct fd_list *);
+ void control_delete(struct fd_list *);
+ int control_queue(struct fd_list *, void *, size_t);
+-void control_recvdata(struct fd_list *fd, char *, size_t);
++int control_recvdata(struct fd_list *fd, char *, size_t);
+ #endif
+diff --git a/src/privsep-control.c b/src/privsep-control.c
+index 40bfb164..954126c0 100644
+--- a/src/privsep-control.c
++++ b/src/privsep-control.c
+@@ -108,6 +108,7 @@ ps_ctl_dispatch(void *arg, struct ps_msghdr *psm, struct msghdr *msg)
+ 	struct iovec *iov = msg->msg_iov;
+ 	struct fd_list *fd;
+ 	unsigned int fd_flags = FD_SENDLEN;
++	int err;
+ 
+ 	switch (psm->ps_flags) {
+ 	case PS_CTL_PRIV:
+@@ -131,7 +132,11 @@ ps_ctl_dispatch(void *arg, struct ps_msghdr *psm, struct msghdr *msg)
+ 		if (fd == NULL)
+ 			return -1;
+ 		ctx->ps_control_client = fd;
+-		control_recvdata(fd, iov->iov_base, iov->iov_len);
++		err = control_recvdata(fd, iov->iov_base, iov->iov_len);
++		if (err == -1 || err == 0) {
++			control_free(fd);
++			ctx->ps_control_client = NULL;
++		}
+ 		break;
+ 	case PS_CTL_EOF:
+ 		ctx->ps_control_client = NULL;
+-- 
+2.43.0
+