sd-netlink: prepare buffer for dropping unexpected message

Follow-up for c7460cce79 (v219). Fixes #35654.
2025-04-17 01:52:17 +01:00
parent ec65c29e51
commit bf478dcffb
1 changed files with 6 additions and 0 deletions
@@ -181,6 +181,12 @@ static int socket_recv_message(int fd, void *buf, size_t buf_size, uint32_t *ret
                log_debug("sd-netlink: ignoring message from PID %"PRIu32, sender.nl.nl_pid);

                if (peek) {
+                        _cleanup_free_ uint8_t *b = new(uint8_t, n);
+                        if (!b)
+                                return -ENOMEM;
+
+                        iov = IOVEC_MAKE(b, n);
+
                        /* drop the message */
                        n = recvmsg_safe(fd, &msg, 0);
                        if (n < 0)