openssh: patch CVE-2025-26466

Pick commit:
https://github.com/openssh/openssh-portable/commit/6ce00f0c2ecbb9f75023dbe627ee6460bcec78c2

(From OE-Core rev: ec3912dcaaab85f1ac8907aa5b0b536c32540ff1)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 37 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssh/openssh/CVE-2025-26466.patch b/meta/recipes-connectivity/openssh/openssh/CVE-2025-26466.patch
new file mode 100644
index 0000000000..1c81515638
--- /dev/null
+++ b/meta/recipes-connectivity/openssh/openssh/CVE-2025-26466.patch
@@ -0,0 +1,36 @@
+From 6ce00f0c2ecbb9f75023dbe627ee6460bcec78c2 Mon Sep 17 00:00:00 2001
+From: "djm@openbsd.org" <djm@openbsd.org>
+Date: Tue, 18 Feb 2025 08:02:12 +0000
+Subject: [PATCH 1/2] upstream: Don't reply to PING in preauth phase or during
+ KEX
+
+Reported by the Qualys Security Advisory team. ok markus@
+
+OpenBSD-Commit-ID: c656ac4abd1504389d1733d85152044b15830217
+
+CVE: CVE-2025-26466
+Upstream-Status: Backport [https://github.com/openssh/openssh-portable/commit/6ce00f0c2ecbb9f75023dbe627ee6460bcec78c2]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ packet.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/packet.c b/packet.c
+index 486f85157..9dea2cfc5 100644
+--- a/packet.c
++++ b/packet.c
+@@ -1865,6 +1865,14 @@ ssh_packet_read_poll_seqnr(struct ssh *ssh, u_char *typep, u_int32_t *seqnr_p)
+                        if ((r = sshpkt_get_string_direct(ssh, &d, &len)) != 0)
+                                return r;
+                        DBG(debug("Received SSH2_MSG_PING len %zu", len));
++                       if (!ssh->state->after_authentication) {
++                               DBG(debug("Won't reply to PING in preauth"));
++                               break;
++                       }
++                       if (ssh_packet_is_rekeying(ssh)) {
++                               DBG(debug("Won't reply to PING during KEX"));
++                               break;
++                       }
+                        if ((r = sshpkt_start(ssh, SSH2_MSG_PONG)) != 0 ||
+                            (r = sshpkt_put_string(ssh, d, len)) != 0 ||
+                            (r = sshpkt_send(ssh)) != 0)
diff --git a/meta/recipes-connectivity/openssh/openssh_9.8p1.bb b/meta/recipes-connectivity/openssh/openssh_9.8p1.bb
index 83145dbd18..3d6cb9f245 100644
--- a/meta/recipes-connectivity/openssh/openssh_9.8p1.bb
+++ b/meta/recipes-connectivity/openssh/openssh_9.8p1.bb
@@ -26,6 +26,7 @@ SRC_URI = "http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-${PV}.tar
            file://0001-Cast-to-sockaddr-in-systemd-interface.patch \
            file://0001-regress-banner.sh-log-input-and-output-files-on-erro.patch \
            file://0001-regress-test-exec-use-the-absolute-path-in-the-SSH-e.patch \
+           file://CVE-2025-26466.patch \
            "
 SRC_URI[sha256sum] = "dd8bd002a379b5d499dfb050dd1fa9af8029e80461f4bb6c523c49973f5a39f3"