corosync: patch CVE-2025-30472

Pick commit from [1] mentioned in [2] from [3]

[1] https://github.com/corosync/corosync/issues/778
[2] https://github.com/corosync/corosync/pull/779
[3] https://nvd.nist.gov/vuln/detail/CVE-2025-30472

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 70 insertions, 0 deletions

diff --git a/meta-networking/recipes-extended/corosync/corosync/CVE-2025-30472.patch b/meta-networking/recipes-extended/corosync/corosync/CVE-2025-30472.patch
new file mode 100644
index 0000000000..9b36dbe3fb
--- /dev/null
+++ b/meta-networking/recipes-extended/corosync/corosync/CVE-2025-30472.patch
@@ -0,0 +1,69 @@
+From 7839990f9cdf34e55435ed90109e82709032466a Mon Sep 17 00:00:00 2001
+From: Jan Friesse <jfriesse@redhat.com>
+Date: Mon, 24 Mar 2025 12:05:08 +0100
+Subject: [PATCH] totemsrp: Check size of orf_token msg
+
+orf_token message is stored into preallocated array on endian convert
+so carefully crafted malicious message can lead to crash of corosync.
+
+Solution is to check message size beforehand.
+
+Signed-off-by: Jan Friesse <jfriesse@redhat.com>
+Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>
+
+CVE: CVE-2025-30472
+Upstream-Status: Backport [https://github.com/corosync/corosync/commits/7839990f9cdf34e55435ed90109e82709032466a]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ exec/totemsrp.c | 18 +++++++++++++++++-
+ 1 file changed, 17 insertions(+), 1 deletion(-)
+
+diff --git a/exec/totemsrp.c b/exec/totemsrp.c
+index 962d0e2a..364528ce 100644
+--- a/exec/totemsrp.c
++++ b/exec/totemsrp.c
+@@ -3679,12 +3679,20 @@ static int check_orf_token_sanity(
+        const struct totemsrp_instance *instance,
+        const void *msg,
+        size_t msg_len,
++       size_t max_msg_len,
+        int endian_conversion_needed)
+ {
+        int rtr_entries;
+        const struct orf_token *token = (const struct orf_token *)msg;
+        size_t required_len;
+ 
++       if (msg_len > max_msg_len) {
++               log_printf (instance->totemsrp_log_level_security,
++                   "Received orf_token message is too long...  ignoring.");
++
++               return (-1);
++       }
++
+        if (msg_len < sizeof(struct orf_token)) {
+                log_printf (instance->totemsrp_log_level_security,
+                    "Received orf_token message is too short...  ignoring.");
+@@ -3698,6 +3706,13 @@ static int check_orf_token_sanity(
+                rtr_entries = token->rtr_list_entries;
+        }
+ 
++       if (rtr_entries > RETRANSMIT_ENTRIES_MAX) {
++               log_printf (instance->totemsrp_log_level_security,
++                   "Received orf_token message rtr_entries is corrupted...  ignoring.");
++
++               return (-1);
++       }
++
+        required_len = sizeof(struct orf_token) + rtr_entries * sizeof(struct rtr_item);
+        if (msg_len < required_len) {
+                log_printf (instance->totemsrp_log_level_security,
+@@ -3868,7 +3883,8 @@ static int message_handler_orf_token (
+            "Time since last token %0.4f ms", tv_diff / (float)QB_TIME_NS_IN_MSEC);
+ #endif
+ 
+-       if (check_orf_token_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) {
++       if (check_orf_token_sanity(instance, msg, msg_len, sizeof(token_storage),
++           endian_conversion_needed) == -1) {
+                return (0);
+        }
+ 
diff --git a/meta-networking/recipes-extended/corosync/corosync_3.1.9.bb b/meta-networking/recipes-extended/corosync/corosync_3.1.9.bb
index af023307bb..1699701c9d 100644
--- a/meta-networking/recipes-extended/corosync/corosync_3.1.9.bb
+++ b/meta-networking/recipes-extended/corosync/corosync_3.1.9.bb
@@ -9,6 +9,7 @@ inherit autotools pkgconfig systemd github-releases
 
 SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/${BP}.tar.gz \
            file://corosync.conf \
+           file://CVE-2025-30472.patch \
           "
 SRC_URI[sha256sum] = "203354bbddee1a97b3c50a076eae89c635f406dd674ccaefc94bb9092acd9535"
 UPSTREAM_CHECK_GITTAGREGEX = "v(?P<pver>\d+(\.\d+)+)"